TOHOKU UNIVERSITY Researchers - Kazunori Takahashi

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Kazunori Takahashi

Section

Graduate School of Engineering

Job title

Associate Professor

Degree

博士（工学）（東北大学）
修士（工学）（東北大学）

researchmap

https://researchmap.jp/7000005535

J-GLOBAL ID

201301094908817392

Research History 10

2024/01 - Present

東北大学グリーン未来創造機構
2014 - Present

National Institute of Advanced Industrial Science and Technology
2013/04 - Present

東北大学　大学院工学研究科　准教授
2022/05 - 2025/04

東北大学ディスティングイッシュトリサーチャー
2023/04 - 2025/03

大学共同利用機関法人自然科学研究機構核融合科学研究所　客員准教授
2021/11 - 2023/03

東北大学　高等研究機構　准教授
2007/04 - 2013/03

岩手大学工学部　助教
2010/09 - 2011/08

オーストラリア国立大学プラズマ研究所　客員研究員
2006/10 - 2007/03

日本学術振興会特別研究員 (PD:東北大学)
2006/10 - 2007/02

オーストラリア国立大学プラズマ研究所

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Education 3

Tohoku University　Graduate School, Division of Engineering

- 2006/09
Tohoku University　Graduate School, Division of Engineering

- 2004/03
Tohoku University　Faculty of Engineering

- 2002/03

Committee Memberships 16

一般社団法人プラズマ・核融合学会　「Plasma Fusion Research」国内常務エディター

2024/12 - Present
一般社団法人プラズマ・核融合学会　領域委員，領域プログラム委員

2024/01 - Present
大学共同利用機関法人自然科学研究機構核融合科学研究所　ユニット研究戦略会議構成員

2023/04 - Present
Frontiers in Space Technologies　Associate Editor

2020/05 - Present
8th Asia-Pacific Conference on Plasma Physics　Program committee

2024/04 - 2024/11
7th Asia-Pacific Conference on Plasma Physics　Program committee

2023/04 - 2023/10
Plasma Research Express　Editorial Board Member

2018/09 - 2022/12
6th Asia-Pacific Conference on Plasma Physics, AAPPS-DPP,　Program Committee

2022/01 - 2022/10
The 11th International Conference on Reactive Plasmas,　Program Committee

2021/07 - 2022/10
The Gaseous Electronics Conference,　Local Organizing Committee

2021/07 - 2022/10
プラズマ・核融合学会　編集委員

2018/04 - 2020/07
Frontiers in Physics　Review Editor

2016/01 - 2020/04
電気学会東北支部　総務幹事

2018/04 - 2019/04
核融合ネットワーク委員　核融合ネットワーク委員

2017/04 - 2019/03
日本物理学会　領域２役員，世話人

2015/10 - 2018/09
電気学会プラズマ技術委員会　一号委員

2011/04 - 2014/03

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Professional Memberships 3

American Physical Society
プラズマ・核融合学会
日本物理学会

Research Interests 3

プラズマプロセス
電気推進
プラズマ理工学

Research Areas 1

Energy / Basic plasma science /

Awards 22

JSPS Prize

2022/12　JSPS　Studies on Plasma Dynamics in Magnetic Nozzles and Space Propulsion
2019: Research Highlights from the past year (Physics)

2020/03　Springer Nature　Helicon-type radiofrequency plasma thrusters and magnetic plasma nozzles
AAPPS-DPP Young Research Award, selected by Prof Donald Blair Melrose

2016/12/07　Association of Asia Pacific Physical Societies, Division of Plasma Physics
AAPPS-DPP Young Research Award, selected by Prof Setsuo Ichimaru

2016/12/07　Association of Asia Pacific Physical Societies, Division of Plasma Physics
AAPPS-DPP Young Research Award, selected by Prof Predhiman Krishan Kaw

2016/12/07　Association of Asia Pacific Physical Societies, Division of Plasma Physics
第１５回インテリジェント・コスモス奨励賞

2016/05　(公財)インテリジェント・コスモス学術振興財団　磁気ノズルヘリコンプラズマ宇宙推進機の学理と開発
第7回青葉工学振興会賞

2013/12/06　青葉工学振興会
矢崎科学技術振興記念財団 2012年度学術賞

2013/03　矢崎科学技術振興記念財団
日本物理学会第６回若手奨励賞

2012/03　日本物理学会
平成23年度文部科学大臣表彰若手科学者賞

2011/04　文部科学省
IOP Publishing IOP Trusted Reviewer 2022

2022/05　Institute of Physics
Top 100 in Physics 2021

2022/03　Scientific Reports (Nature publishing group)　Magnetic nozzle radiofrequency plasma thruster approaching twenty percent thruster efficiency
IOP Outstanding Reviewer Award

2021/04　IOP(Institute of Physics) Publishing
IOP Trusted Reviewer

2020/09　IOP Publishing
Top 100 in Physics 2018

2019/04　Scientific Reports (Nature publishing group)　Demonstrating a new technology for space debris removal using a bi-directional plasma thruster
プラズマ核融合学会若手学会発表賞

2013/12/06　一般社団法人プラズマ・核融合学会　磁気ノズル中径方向拡散の抑制によるヘリコンスラスターの性能向上
平成２３年電気学会優秀論文発表賞（基礎・材料・共通部門表彰）

2012/09　電気学会
電気学会東北支部優秀論文賞

2012/04　電気学会東北支部
電気学会優秀論文発表賞

2009/03　電気学会
東北大学電気情報優秀賞

2007/03　東北大学電気系
財団法人青葉工学振興会第１２回研究奨励賞

2006/12　財団法人青葉工学振興会
第６回核融合エネルギー連合講演会優秀発表賞

2006/06　核融合エネルギー連合講演会

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Papers 194

Detection of high energy electrons in a cusp-field magnetic nozzle radio frequency plasma thruster Peer-reviewed

Kazunori Takahashi, Christine Charles, d Rod, W. Boswell

AIP Advances　15　075202-1-075202-5　2025/07

DOI： 10.1063/5.0255685 　
Development and characterization of the ALFVEN thruster Peer-reviewed

Yung-An Chan, Kazunori Takahashi, Martin Grabe, Christopher Geile

Journal of Electric Propulsion　4　(1)　25-1 - 25-21　2025/04/14
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s44205-025-00123-3 　

eISSN： 2731-4596

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Abstract The Advanced Linear Field Vector Excitation Network (ALFVEN) thruster represents a novel RF plasma propulsion system developed to enhance the coupling efficiency of electromagnetic waves to plasma, particularly in low-power conditions. This study presents the design, development, and experimental characterization of the ALFVEN- 4050, an RF thruster utilizing a resonant network to generate a linear-polarized electromagnetic field in the transverse direction of the thruster's discharge chamber. The innovations of ALFVEN- 4050 include utilizing a square-loop antenna array and the orthogonal coupling of the transverse electromagnetic field and uniform magnetic flux across the discharge chamber, enabling efficient plasma generation. Experimental results using argon and krypton propellants demonstrate promising ignition capabilities for low gas flow rate and stable impedance matching. The ALFVEN thruster's performance highlights its potential to overcome challenges in low-power RF plasma thrusters, such as low mass utilization efficiency, paving the way for advanced EP concepts for applications with alternative propellants.
Response of negative ion beamlet width and axis deflection to RF field in beam extraction region Peer-reviewed

Kenichi Nagaoka, Haruhisa Nakano, Taiga Hamajima, Ryoya Nakamoto, Katsuyoshi Tsumori, Masaki Osakabe, Masashi Kisaki, Kenji Miyamoto, Kazunori Takahashi, Ursel Fantz

Scientific Reports　15　1494-1-1494-8　2025/01

DOI： 10.1038/s41598-024-81334-w 　
Research progress and remarks on helicon plasma: a report on the Second Helicon Plasma Physics and Applications Workshop Peer-reviewed

L. Chang, R. Boswell, E. Scime, S. Shinohara, K. Takahashi, S. Thakur, F. Filleul, A. Caldarelli, S. Isayama, Y. Yu, M. Xu, H. B. Zhang, T. Y. Huang, M. Y. Wu, J. T. Wu, B. H. Xia, L. F. Lu, A. P. Sun, D. Du, Z. Y. Zhang, R. X. Yuan, A. D. Xu, X. Yang, D. Jing, Y. Xia, C. Wang, Y. W. Zhang, X. S. Wu, Z. Y. Yang, Y. Z. Sun

Reviews of Modern Plasma Physics　8　(1)　32-1-32-36　2024/10/29
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s41614-024-00171-6 　

eISSN： 2367-3192
Hall thruster ion acceleration neutralized by a radiofrequency inductively coupled plasma Peer-reviewed

Kazunori Takahashi, Hiroki Watanabe, Yugo Nakahama, Kodai Kikuchi

Journal of Electric Propulsion　3　(3)　18-1-18-10　2024/09/27
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s44205-024-00081-2 　

eISSN： 2731-4596
Effect of gas injection pattern on magnetically expanding rf plasma source Peer-reviewed

Yugo Nakahama, Kazunori Takahashi

Japanese Journal of Applied Physics　63　09SP01-1-09SP01-5　2024/09

DOI： 10.35848/1347-4065/ad6e92 　
Detection of a low-frequency ion instability in a magnetic nozzle Peer-reviewed

A Caldarelli, F Filleul, K Takahashi, R W Boswell, C Charles, J E Cater, N Rattenbury

Plasma Sources Science and Technology　33　(8)　085010-1-085010-12　2024/08/01
Publisher: IOP Publishing
DOI： 10.1088/1361-6595/ad6f3f 　

ISSN： 0963-0252

eISSN： 1361-6595

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Abstract A low-frequency ion instability, with frequency between the ion gyrofrequency and the lower hybrid frequency , is detected in an argon plasma expanding in a magnetic nozzle for magnetic fields between G. The frequency of the instability exhibits a linear dependence with magnetic field strength, and the wave amplitude has a radial maximum that would match the location of a conical density structure, i.e. high-density cones. For all of the magnetic field cases analysed, the high-frequency spectra showed upper and lower sidebands centred around the driving frequency and at a separation equal to the instability frequency, 27.12 MHz kHz. Measurements of the perpendicular wavenumber would satisfy, for certain magnetic field strengths, the dispersion relation of both an electrostatic ion cyclotron wave (ICW) and of an ion acoustic wave. It is hypothesised that the observed low-frequency wave could be an acoustic-like instability propagating perpendicular to the magnetic field, which develops as an ICW at some magnetic field strengths. From the data collected, it is suggested that the high-frequency sidebands may be caused by modulation of the low-frequency wave.
Characterization of electron extraction from a 40.68 MHz radiofrequency inductive plasma source Peer-reviewed

Kodai Kikuchi, Kazunori Takahashi

Japanese Journal of Applied Physics　63　(8)　08SP03-1-08SP03-5　2024/08/01
Publisher: IOP Publishing
DOI： 10.35848/1347-4065/ad66d9 　

ISSN： 0021-4922

eISSN： 1347-4065

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Abstract An electron current is extracted from a 40.68 MHz inductively coupled plasma source, in which a grounded ion collector electrode is installed to maintain the charge neutrality, by applying a positive voltage to a metallic plate located downstream of the source. The ion collector has an exit orifice of either 20 mm or 2.2 mm in diameter, showing a larger electron extraction current for the 2.2 mm-diameter case. The result is discussed with a global model, implying a higher plasma density for the 2.2 mm-diameter case due to the increased neutral pressure in the source. Metallic and insulator exits having a 2.2 mm-diameter orifice are tested, providing a larger electron extraction current for the metallic case despite a small fraction of a change in the total ion collection area. It is speculated that the electron extraction current is affected by the ion collection near the electron extraction hole and the potential distribution.
Magnetron sputtering thruster operated with a compact gas feeding system using double pulsed valves Peer-reviewed

Sota Shimizu, Kazunori Takahashi

Acta Astronautica　221　79-84　2024/08
Publisher: Elsevier BV
DOI： 10.1016/j.actaastro.2024.05.019 　

ISSN： 0094-5765
Development and Characterization of the ALFVEN Thruster

Yung-An Chan, Kazunori Takahashi, Martin Grabe, Julian Ammer, Christopher Geile

Proceedings of the 38th International Electric Propulsion Conference　IEPC-2024-112　2024/06
Cross-field electron transport in a magnetic nozzle

Kazunori Takahashi, Christine Charles, d Rod, W. Boswell

Proceedings of the 38th International Electric Propulsion Conference　IEPC-2024-139　2024/06
5-kW class helicon plasma thruster performance

Kazunori Takahashi

Proceedings of the 38th International Electric Propulsion Conference　IEPC-2024-140　2024/06
Evaluation of a magnetic nozzle radiofrequency plasma thruster with cusp magnetic field using permanent magnet

Yugo Nakahama, Kazunori Takahashi

Proceedings of the 38th International Electric Propulsion Conference　IEPC-2024-149　2024/06
Temporally resolved measurement of a force induced by a pulsed water-fueled magnetron sputtering source Peer-reviewed

Sota Shimizu, Kazunori Takahashi

Journal of Plasma Physics　90　975900205-1-975900205-12　2024/04

DOI： 10.1017/S0022377824000485 　
Modelling a thrust imparted by a highly ionized magnetic nozzle rf plasma thruster Peer-reviewed

Kazunori Takahashi

Journal of Plasma Physics　90　975900201-1-975900201-12　2024/03

DOI： 10.1017/S0022377824000266 　
Measurement of a force imparted to a magnetic nozzle by electron diamagnetism Peer-reviewed

Soya Sumikawa, Kazunori Takahashi

Physics of Plasmas　31　(3)　034501-1-034501-5　2024
Publisher: AIP Publishing
DOI： 10.1063/5.0192917 　

ISSN： 1070-664X

eISSN： 1089-7674

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An electron-beam plasma source consisting of a hot filament is installed near the throat of the magnetic nozzle immersed in a vacuum chamber. The low plasma potential of about 5 V is formed over the region of the measurement in the weakly ionized and partially magnetized argon plasma expanding along a magnetic nozzle; an electric field is much smaller than a pressure gradient, providing a force balance between the electron pressure and the magnetic pressure. This condition leads to a negligible electron E×B drift current and nearly pure diamagnetism. Measurement of the force exerted on the magnetic nozzle is performed by attaching only the solenoid to a pendulum thrust balance, clearly demonstrating the presence of the force induced by the purely diamagnetic current, which is the major contributor to the thrust generation in the magnetic nozzle plasma thruster. This indicates that the thrust can be generated only by the electrons expanding in the magnetic nozzle.
Effect of a permanent-magnet-induced cusp field on a magnetic nozzle radio frequency plasma thruster Peer-reviewed

Yugo Nakahama, Kazunori Takahashi

AIP Advances　14　(1)　015059-1-015059-8　2024/01
Publisher: AIP Publishing
DOI： 10.1063/5.0186991 　

eISSN： 2158-3226

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A cusp magnetic field is formed upstream of a radio frequency antenna by using a permanent magnet (PM) array in a radio frequency plasma source attached to a diffusion chamber, while an expanding magnetic field configuration downstream of the source is maintained by placing a solenoid near the source tube’s exit, resembling a magnetic nozzle plasma thruster. The PM array is composed of 16 neodymium magnets and is designed to be movable axially, providing a movable axial location of the cusp field. The source is operated at a frequency of 13.56 MHz and an rf power of up to 2.6 kW in low-pressure argon. A force exerted on a target plate located downstream of the source is assessed by a pendulum target technique, showing that the force is increased if the cusp field is closer to the radio frequency antenna. The result is consistent with the previously reported result for the cusp field configuration applied by two sets of solenoids, while the present configuration can reduce the consumed electricity for the upstream solenoid.
Experimental investigation on magnetic ﬁeld strength providing thrust saturation in a magnetic nozzle radiofrequency plasma thruster Invited Peer-reviewed

Kazunori Takahashi, Soya Sumikawa

Plasma Physics and Controlled Fusion　66　015012-1-015012-9　2024/01
Publisher: IOP Publishing
DOI： 10.1088/1361-6587/ad1124 　

ISSN： 0741-3335

eISSN： 1361-6587

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Abstract Magnetic field strength applied to a magnetic nozzle radiofrequency (rf) plasma thruster having a 10.5-cm-diameter source tube is increased up to about 3~kG by pulsing the solenoid current. A target plate is installed at 30 cm downstream of the source and an impulse bit exerted to the target is measured to assess the thrust, where the thrust balance measurement was impossible due to the interaction between the pulsed magnetic fields and the eddy currents on surroundings. Since the diameter of the plasma plume at the target location is larger than the target diameter, a comparison between the thrust balance and target measurements under continuous magnetic field and rf power is performed prior to the pulsed magnetic field experiments, showing that about 65 percent of the plasma momentum is exerted to the target plate. Saturation of the impulse bit, being equivalent to the force multiplied by the rf pulse width, is clearly observed when increasing the magnetic field strength. The magnetic field providing the force saturation is found to be changed by the source diameter, which is qualitatively explained by considering a change in the plasma loss to the source wall in a thruster model containing the particle balance, power balance, and one-dimensional magnetic nozzle models. It is suggested that the magnetic field strength required for optimizing the force, i.e., the thrust, can be reduced when enlarging the source tube diameter.
Characterization of a radiofrequency linear plasma device in uniform and convergent magnetic fields Peer-reviewed

Kazunori Takahashi, Yume Teranishi

Plasma Sources Science and Technology　32　(12)　125004-1-125004-8　2023/12
Publisher: IOP Publishing
DOI： 10.1088/1361-6595/ad0fb0 　

ISSN： 0963-0252

eISSN： 1361-6595

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Abstract A linear radiofrequency plasma device is constructed, where a source operating at a frequency of 13.56 MHz and a maximum power of several kW is attached to a cylindrical vacuum chamber about 1 m in length. Seven solenoids are located around the source and the chamber, providing various magnetic field configurations by changing the solenoid currents. The plasma density of the radiofrequency linear plasma device is initially characterized in uniform and convergent magnetic field configurations. A blue mode argon plasma, being inherent to the helicon or high-density discharge, is observed in the chamber downstream of the source for both configurations, while the density near the antenna is lower than that in the chamber. Furthermore, the density for the convergent magnetic field configuration is found to be larger than that for the uniform case, providing a maximum density of about $2\times10^{19}~\textrm{m}^{-3}$. Spatiotemporal measurements of the ion saturation current reveal that the density peak is formed near the rf antenna at the initial time of the discharge and the peripheral high-density region subsequently appears downstream of the antenna, implying that the rf power is efficiently coupled with the electrons downstream of the antenna once the initial plasma is created. A few ms after turning on the rf power, the density over the whole region reduces, which seems to be due to a neutral depletion.
Helicon waves in a converging-diverging magnetoplasma Peer-reviewed

F Filleul, A Caldarelli, K Takahashi, R W Boswell, C Charles, J E Cater, N Rattenbury

Plasma Sources Science and Technology　32　(11)　115015-1-115015-16　2023/11/01
Publisher: IOP Publishing
DOI： 10.1088/1361-6595/ad0b96 　

ISSN： 0963-0252

eISSN： 1361-6595

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Abstract Waves propagating along a converging-diverging rf magnetoplasma having the characteristics of a bounded m = 0 helicon mode are reported and characterised. The discharge features a 30$~$cm separation between the region of radiofrequency energy deposition by a single loop antenna and the region of maximum magnetic field applied by a pair of coils. With 200$~$W of rf input power, up to a five-fold increase in axial plasma density between the antenna and the magnetic mirror throat is observed together with an Ar II blue-mode. Two dimensional B-dot probe measurements show that the rf magnetic fields are closely guided by the converging-diverging geometry. The wave is characterised as a m = 0 mode satisfying the helicon dispersion relation on-axis with radial boundary conditions approximately matching the radii of the plasma column. Analysis of the wave phase velocity and wave axial damping failed to identify collisionless or collisional wave-plasma coupling mechanisms. Instead, the wave axial amplitude variations can be explained by local wave resonances and possible reflections from localised rapid changes of the refractive index. A Venturi-like effect owing to the funnel-shaped magnetoplasma and conservation of the wave energy may also explain some level of amplitude variations.
Comparison of vacuum-immersed helicon thrusters terminated by upstream magnetic and physical walls Peer-reviewed

Kazunori Takahashi

Journal of Physics D: Applied Physics　56　(47)　475207-1-475207-9　2023/08/31
Publisher: IOP Publishing
DOI： 10.1088/1361-6463/acef36 　

ISSN： 0022-3727

eISSN： 1361-6463

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Abstract Thrusts imparted by helicon thrusters terminated by a cusp magnetic field and a physical wall are compared in a laboratory experiment, where the configurations have source lengths of 26 cm and 17.5 cm, respectively. The thruster is typically operated at about 5 kW of radiofrequency power and argon gas is used as a propellant. The influence of the cusp magnetic field inside the source on the thrust is clearly observed for the long source length case, while it does not significantly affect the thrust for the short source length case. The results imply that the thrust enhancement by the cusp magnetic field is due to the geometrical isolation of the plasma from the physical wall, which reduces energy loss to the wall. Furthermore, it is observed that the high-potential plasma for the short source length case is indeed unstable due to microarcings, which occur with an interval time of about sub-second. It is shown that the occurrence of microarcings induces a temporal change in the plasma potential, while no drastic change in the electron temperature is observed.
Effect of rf driving frequency on peripheral high energy electrons in a magnetically expanding plasma reactor Peer-reviewed

Thanatith Nakul, Yugo Nakahama, Kazunori Takahashi

AIP Advances　13　(8)　085324-1-085324-8　2023/08
Publisher: AIP Publishing
DOI： 10.1063/5.0166423 　

eISSN： 2158-3226

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Two operational rf driving frequencies of 2 and 13.56 MHz are employed in a 14-cm-diameter radio frequency (rf) plasma source under an expanding magnetic field. The changes in the radial profiles of the ion saturation current and the electron temperature are observed in the magnetically expanding plasma when changing the driving frequency. Peripheral high temperature electrons are detected for the higher frequency case, which is consistent with previous studies, implying a localized electron heating in the radially outer region near the antenna and a transport along the magnetic field. However, it disappears when lowering the rf driving frequency, which would be due to an increase in a skin depth. Therefore, the present results demonstrate that the rf power would be absorbed in radially outer and entire regions of the discharge tube for the higher and lower rf driving frequency cases, respectively. As a result of the ionization induced by the peripheral high temperature electrons in the expanding magnetic field, the density in the expanding magnetic field for the 13.56 MHz case is higher than the 2 MHz case, resulting in the larger thrust as measured by a pendulum target technique.
Kinetic electron cooling in magnetic nozzles: experiments and modeling Peer-reviewed

June Young Kim, Kyoung-Jae Chung, Kazunori Takahashi, Mario Merino, Eduardo Ahedo

Plasma Sources Science and Technology　32　(7)　073001-1-073001-27　2023/07/01
Publisher: IOP Publishing
DOI： 10.1088/1361-6595/acd71c 　

ISSN： 0963-0252

eISSN： 1361-6595

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Abstract As long-distance space travel requires propulsion systems with greater operational flexibility and lifetimes, there is a growing interest in electrodeless plasma thrusters that offer the opportunity for improved scalability, larger throttleability, running on different propellants and limited device erosion. The majority of electrodeless designs rely on a magnetic nozzle (MN) for the acceleration of the plasma, which has the advantage of utilizing the expanding electrons to neutralize the ion beam without the additional installation of a cathode. The plasma expansion in the MN is nearly collisionless, and a fluid description of electrons requires a non-trivial closure relation. Kinetic electron effects and in particular electron cooling play a crucial role in various physical phenomena, such as energy balance, ion acceleration, and particle detachment. Based on experimental and theoretical studies conducted in recognition of this importance, the fundamental physics of the electron-cooling mechanism revealed in MNs and magnetically expanding plasmas is reviewed. In particular, recent approaches from the kinetic point of view are discussed, and our perspective on the future challenges of electron cooling and the relevant physical subject of MN is presented.
Magnetic Nozzle Radiofrequency Plasma Systems for Space Propulsion, Industry, and Fusion Plasmas Invited Peer-reviewed

Kazunori TAKAHASHI, Christine CHARLES, Rod W BOSWELL, Kazuma EMOTO, Yoshinori TAKAO, Shiro HARA, Haruhisa NAKANO, Kenichi NAGAOKA, Katsuyoshi TSUMORI

Plasma and Fusion Research　18　2501050-1-2501050-10　2023/07

DOI： 10.1585/pfr.18.2501050 　
Enhanced diamagnetism by energetic tail electrons in a magnetized plasma Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell

Physical Review Research　5　(2)　L022029-1-L022029-5　2023/05/11
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevresearch.5.l022029 　

eISSN： 2643-1564
Radial profile control of a magnetically expanding plasma and its impact on a plasma thruster Peer-reviewed

Soya Sumikawa, Kazunori Takahashi

Japanese Journal of Applied Physics　62　(SL)　SL1001-1-SL1001-5　2023/04/03
Publisher: IOP Publishing
DOI： 10.35848/1347-4065/acc3a3 　

ISSN： 0021-4922

eISSN： 1347-4065

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Abstract Two RF loop antennas are wound around the source tube of an inductively coupled and magnetically expanding plasma. The magnetic field lines are convergent in the source and divergent downstream of the source tube. The RF antennas are independently powered by two RF generators, providing the change in the radial profile of the ion saturation current of a Langmuir probe. Peaks in the ion saturation currents are observed around the magnetic field lines intersecting the radial source wall at the RF antenna positions, implying the presence of the electrons created near the antennas and transported along the magnetic field lines. The results suggest that the radial profile of the magnetically expanding plasma can be controlled by superimposing the plasmas created by the two antennas. The impact of the radial profile on the thrust is preliminarily investigated by attaching only the solenoid to a pendulum thrust balance immersed in vacuum.
Assessment of a thrust induced by a water-fueled magnetron sputtering source Peer-reviewed

Sota Shimizu, Kazunori Takahashi

Acta Astronautica　204　370-375　2023/03
Publisher: Elsevier BV
DOI： 10.1016/j.actaastro.2023.01.014 　

ISSN： 0094-5765
Density profile transition and high-energy electron transport in a magnetically expanding radio frequency plasma Peer-reviewed

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

Physics of Plasmas　30　(1)　013509-1-013509-10　2023/01
Publisher: AIP Publishing
DOI： 10.1063/5.0126901 　

ISSN： 1070-664X

eISSN： 1089-7674

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The density profile transition and high-energy electron transport in a magnetically expanding radio frequency (RF) plasma were investigated using particle-in-cell and Monte Carlo collision techniques, where both the plasma source and the diffusion region were simulated self-consistently. The simulation results show that the density profile changes from center-peaked to bimodal plasma with increasing magnetic field strength, where bimodal plasma was observed in previous experiments. Then, the density profile transition is discussed with respect to ionization, electron temperature, and high-energy electron density. This indicates that electrons were heated by the RF field and transported radially inward across magnetic field lines. The moving distance of high-energy electrons is explained by an electron-neutral elastic collision. Therefore, the density formation depends on where the electrons are heated and how far the high-energy electrons are transported by an elastic collision, implying the longer existing time of high-energy electrons that move radially inward away from the RF antenna.
Wave-driven electron inward transport in a magnetic nozzle Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell

Scientific Reports　12　(1)　20137-1-20137-9　2022/12/05
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-022-24202-9 　

eISSN： 2045-2322

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Abstract Plasma flows in divergent magnetic fields resembling a magnetic nozzle can be found over wide scales ranging from astrophysical objects to terrestrial plasma devices. Plasma detachment from a magnetic nozzle is a frequent occurrence in natural plasmas, e.g., plasma ejection from the Sun and release from the Sun’s magnetic field, forming the solar wind. Plasma detachment has also been a challenging problem relating to space propulsion devices utilizing a magnetic nozzle, especially the detachment of the magnetized electrons having a gyro-radius smaller than the system’s scale is required to maintain zero net current exhausted from the system. Here we experimentally demonstrate that a cross-field transport of the electrons toward the main nozzle axis, which contributes to neutralizing the ions detached from the nozzle, is induced by the spontaneously excited magnetosonic wave having the frequency considerably higher than the ion cyclotron frequency and close to the lower hybrid frequency, driving an E × B drift that only effects the electrons. Wave-induced transport and loss have been one of many important issues in plasma physics over the past several decades. Conversely, the presently observed electron inward transport has a beneficial effect on the detachment by reducing the divergence of the expanding plasma beam; this finding will open a new perspective for the role of waves and instabilities in plasmas.
Thirty percent conversion efficiency from radiofrequency power to thrust energy in a magnetic nozzle plasma thruster Peer-reviewed

Kazunori Takahashi

Scientific Reports　12　(1)　18618-1-18618-13　2022/11/10
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-022-22789-7 　

eISSN： 2045-2322

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Abstract Innovations for terrestrial transportation technologies, e.g., cars, aircraft, and so on, have driven historical industries so far, and a similar breakthrough is now occurring in space owing to the successful development of electric propulsion devices such as gridded ion and Hall effect thrusters, where solar power is converted into the momentum of the propellant via acceleration of the ionized gases, resulting in a high specific impulse. A magnetic nozzle (MN) radiofrequency (rf) plasma thruster consisting of a low-pressure rf plasma source and a MN is an attractive candidate for a high-power electric propulsion device for spacecraft, as it will provide a long lifetime operation at a high-power level due to the absence of an electrode exposed to the plasma and a high thrust density. The high-density plasma produced in the source is transported along the magnetic field lines toward the open-source exit and the plasma is then spontaneously accelerated in the MN. By ejecting the plasma flow from the system, the reaction forces are exerted to the thruster structure including the source and the MN, and the spacecraft is resultantly propelled. The thruster will open the next door for space technologies, while the performance of the MN rf plasma thruster has been lower than those of the mature electric propulsion devices due to the energy loss to the physical walls. Here the thruster efficiency of about 30%, being the highest to date in this type of thruster, is successfully obtained in the MN rf plasma thruster by locating a cusp magnetic field inside the source, which acts as a virtual magnetic wall isolating the plasma from the source wall. The increase in the thrust by the cusp can be explained by considering the reductions of the loss area and the plasma volume in a thrust analysis combining a global source model and a one-dimensional MN model.
Characterization of a 2 MHzradiofrequency-driven magnetically expanding plasma source Peer-reviewed

Thanatith Nakul, Kazunori Takahashi

AIP Advances　12　095118-1-095118-7　2022/09

DOI： 10.1063/5.0106732 　
Two-dimensional deflection of a plasma plume exhausted from a magnetically steered radiofrequency plasma thruster Peer-reviewed

Kazunori Takahashi, Ryoji Imai

Physics of Plasmas　29　(5)　054501-1-054501-5　2022/05
Publisher: AIP Publishing
DOI： 10.1063/5.0090476 　

ISSN： 1070-664X

eISSN： 1089-7674

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Two-dimensional steering of a magnetic nozzle in a radio frequency plasma thruster is performed by mounting four small additional solenoids in addition to a main solenoid providing the axisymmetric magnetic nozzle. The cross-sectional profile of the ion saturation current is measured by a Langmuir probe array aligned along the radial axis, which is rotated to perform the spatial scan in the cross section of the plume. The measurements show that the horizontal, vertical, and diagonal deflections of the plume can be controlled by the electric currents supplied to the four additional solenoids. Since the deflections of the magnetic nozzle and the plume can provide the thrust vector control as demonstrated in previous studies, the present result leads a two-dimensional thrust vector control in the magnetic nozzle radio frequency plasma thruster.
Deflections of dynamic momentum flux and electron diamagnetic thrust in a magnetically steered rf plasma thruster Peer-reviewed

Ryoji Imai, Kazunori Takahashi

Journal of Physics D: Applied Physics　55　(13)　135201-1-135201-11　2022
Publisher: IOP Publishing
DOI： 10.1088/1361-6463/ac4451 　

ISSN： 0022-3727

eISSN： 1361-6463

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<title>Abstract</title> Two-dimensional characterization of the plasma plume is experimentally performed downstream of a magnetically steered radiofrequency plasma thruster, where the ion beam current, the ion saturation current, and the horizontal dynamic momentum flux, are measured by using the retarding field energy analyzer, the Langmuir probe, and the momentum vector measurement instrument, respectively, in addition to the previously measured horizontal thrust. The measurements show the deflections of the dynamic momentum flux including both the ions and the neutrals; the change in the direction of the dynamic momentum flux is consistent with the previously measured horizontal thrust. Furthermore, the ion saturation current profile implies that the deflected electron-diamagnetic-induced Lorentz force exerted to the magnetic nozzle contributes to the change in the thrust vector. Therefore, it is demonstrated that the deflections of both the dynamic momentum flux and the electron-diamagnetic-induced Lorentz force play an important role in the thrust vector control by the magnetic steering.
Comparison of thrusts imparted by a magnetron sputtering source operated in DC and high power impulse modes Peer-reviewed

Kazunori Takahashi, Hidemasa Miura

AIP Advances　11　(10)　105115-1-105115-6　2021/10
Publisher: AIP Publishing
DOI： 10.1063/5.0069184 　

eISSN： 2158-3226
Numerical investigation of internal plasma currents in a magnetic nozzle Peer-reviewed

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

Physics of Plasmas　28　(9)　093506-1-093506-11　2021/09
Publisher: AIP Publishing
DOI： 10.1063/5.0053336 　

ISSN： 1070-664X

eISSN： 1089-7674
Investigation of Momentum Flux Lost to a Lateral Wall in an Electrodeless RF Plasma Thruster

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

AIAA Propulsion and Energy 2021 Forum　3383-1-3383-6　2021/08/09
Publisher: American Institute of Aeronautics and Astronautics
DOI： 10.2514/6.2021-3383 　
Demonstrating a magnetic steering of the thrust imparted by the magnetic nozzle radiofrequency plasma thruster Peer-reviewed

Ryoji Imai, Kazunori Takahashi

Applied Physics Letters　118　264102-1-264102-5　2021/06

DOI： 10.1063/5.0058202 　
Vector Resolved Energy Fluxes and Collisional Energy Losses in Magnetic Nozzle Radiofrequency Plasma Thrusters Peer-reviewed

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

Frontiers in Physics　9　779204-1-779204-13　2021
Publisher: Frontiers Media SA
DOI： 10.3389/fphy.2021.779204 　

eISSN： 2296-424X

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Energy losses in a magnetic nozzle radiofrequency plasma thruster are investigated to improve the thruster efficiency and are calculated from particle energy losses in fully kinetic simulations. The simulations calculate particle energy fluxes with a vector resolution including the plasma energy lost to the dielectric wall, the plasma beam energy, and the divergent plasma energy in addition to collisional energy losses. As a result, distributions of energy losses in the thruster and the ratios of the energy losses to the input power are obtained. The simulation results show that the plasma energy lost to the dielectric is dramatically suppressed by increasing the magnetic field strength, and the ion beam energy increases instead. In addition, the divergent ion energy and collisional energy losses account for approximately 4%–12% and 30%–40%, respectively, regardless of the magnetic field strength.
Axial momentum gains of ions and electrons in magnetic nozzle acceleration Peer-reviewed

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

Plasma Sources Science and Technology　30　(11)　115016-1-115016-11　2021
Publisher: IOP Publishing
DOI： 10.1088/1361-6595/ac33ee 　

ISSN： 0963-0252

eISSN： 1361-6595

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<title>Abstract</title> Fully kinetic simulations of magnetic nozzle acceleration were conducted to investigate the axial momentum gains of ions and electrons with electrostatic and Lorentz forces. The axial momentum gains per ion and electron are directly calculated from the kinetics of charged particles, indicating that electrons in the magnetic nozzle obtain the net axial momentum by the Lorentz force, even though they are decelerated by the electrostatic force. Whereas ions are also accelerated by the electrostatic force, the axial momentum gain of electrons increases significantly with increasing magnetic field strength and becomes dominant in the magnetic nozzle. In addition, it is clearly shown that the axial momentum gain of electrons is due to the electron momentum conversion from the radial to the axial direction, resulting in a significant increase in the thrust and exhaust velocity.
Direct measurement of thrust induced by a magnetron sputtering source Peer-reviewed

Kazunori Takahashi, Hidemasa Miura

Applied Physics Letters　118　(15)　154101-1-154101-5　2021
Publisher: AIP Publishing
DOI： 10.1063/5.0042798 　

ISSN： 0003-6951

eISSN： 1077-3118
Automatically Controlled Frequency-Tunable rf Plasma Thruster: Ion Beam and Thrust Measurements Invited Peer-reviewed

Kazunori Takahashi, Ryoji Imai, Kengo Hanaoka

Frontiers in Physics　9　639010-1-639010-13　2021
Publisher: Frontiers Media SA
DOI： 10.3389/fphy.2021.639010 　

eISSN： 2296-424X

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A fast and automatically controlled frequency-tunable radiofrequency (rf) system is installed in an rf plasma thruster consisting of a stepped-diameter insulator source tube wound by a single-turn loop antenna and a solenoid providing a magnetic nozzle, and immersed in vacuum. The frequency and the output power are controlled so as to minimize the reflection coefficient and to maintain the net power corresponding to the forward minus reflected powers at a constant level. The reproducibility of the impedance matching and the stability of the net rf power are assessed, showing the fast impedance matching within about 10 msec and the long and stable delivery of the rf power to the thruster. When increasing the rf power up to 500 W, discontinuous changes in the source plasma density, the imparted thrust, and the signal intensity of the ion beam downstream of the thruster are observed, indicating effects of the discharge mode on the thruster performance and the ion energy distribution.
Vertical silicon etching by using an automatically and fast-controlled frequency tunable rf plasma source Peer-reviewed

Kengo Hanaoka, Kazunori Takahashi

AIP Advances　11　(2)　025013-1-025013-6　2021
Publisher: AIP Publishing
DOI： 10.1063/5.0038596 　

eISSN： 2158-3226
Magnetic nozzle radiofrequency plasma thruster approaching twenty percent thruster efficiency Peer-reviewed

Kazunori Takahashi

Scientific Reports　11　(1)　2768-1-2768-11　2021
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41598-021-82471-2 　

eISSN： 2045-2322

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<title>Abstract</title>Development of a magnetic nozzle radiofrequency (rf) plasma thruster has been one of challenging topics in space electric propulsion technologies. The thruster typically consists of an rf plasma source and a magnetic nozzle, where the plasma produced inside the source is transported along the magnetic field and expands in the magnetic nozzle. An imparted thrust is significantly affected by the rf power coupling for the plasma production, the plasma transport, the plasma loss to the wall, and the plasma acceleration process in the magnetic nozzle. The rf power transfer efficiency and the imparted thrust are assessed for two types of rf antennas exciting azimuthal mode number of <inline-formula><alternatives><tex-math>$$m=+1$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mo>+</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> and <inline-formula><alternatives><tex-math>$$m=0$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula>, where propellant argon gas is introduced from the upstream of the thruster source tube. The rf power transfer efficiency and the density measured at the radial center for the <inline-formula><alternatives><tex-math>$$m=+1$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mo>+</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> mode antenna are higher than those for the <inline-formula><alternatives><tex-math>$$m=0$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> mode antenna, while a larger thrust is obtained for the <inline-formula><alternatives><tex-math>$$m=0$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> mode antenna. Two-dimensional plume characterization suggests that the lowered performance for the <inline-formula><alternatives><tex-math>$$m=+1$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mo>+</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> mode case is due to the plasma production at the radial center, where contribution on a thrust exerted to the magnetic nozzle is weak due to the absence of the radial magnetic field. Subsequently, the configuration is modified so as to introduce the propellant gas near the thruster exit for the <inline-formula><alternatives><tex-math>$$m=0$$</tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>m</mml:mi> <mml:mo>=</mml:mo> <mml:mn>0</mml:mn> </mml:mrow> </mml:math></alternatives></inline-formula> mode configuration and the thruster efficiency approaching twenty percent is successfully obtained, being highest to date in the kW-class magnetic nozzle rf plasma thrusters.
Plasma Technologies in an Innovative Semiconductor Industrial System: Minimal Fab, -Multi-Target Sputtering Tool Using a Helicon Plasma Source- Invited Peer-reviewed

Kazunori Takahashi

Journal of Plasma and Fusion Research　96　(10)　552-556　2020/10
Thermodynamic analogy for electrons interacting with a magnetic nozzle Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W Boswell, And Akira

Physical Review Letters　125　165001-1-165001-5　2020/10

DOI： 10.1103/PhysRevLett.125.165001 　
Increased thrust-to-power ratio of a stepped-diameter helicon plasma thruster with krypton propellant Peer-reviewed

Kazunori Takahashi, Yoshinori Takao, Ando And

Journal of Propulsion and Power　36　(6)　961-965　2020/09

DOI： 10.2514/1.B37940 　
Commentary: On helicon thrusters: Will they ever fly? Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell, Yoshinori Takao, Amnon Fruchtman, Jaume Navarro-Cavallé, Mario Merino

Frontiers in Physics　8　277-1-277-3　2020/08/20
Publisher: Frontiers Media SA
DOI： 10.3389/fphy.2020.00277 　

eISSN： 2296-424X
Spatial measurement of axial and radial momentum fluxes of a plasma expanding in a magnetic nozzle Peer-reviewed

Kazunori Takahashi, Takeharu Sugawara, And Akiro

New Journal of Physics　22　(7)　073034-1-073034-9　2020/07/27
Publisher: IOP Publishing
DOI： 10.1088/1367-2630/ab98d5 　

eISSN： 1367-2630
Modification of momentum flux lost to a radial wall of a helicon source by neutral injection Peer-reviewed

Kazunori Takahashi, Takeharu Sugawara, Ando And

Physics of Plasmas　27　(6)　064504-1-064504-5　2020/06
Publisher: AIP Publishing
DOI： 10.1063/5.0002173 　

ISSN： 1070-664X

eISSN： 1089-7674
Reproducibility of a Plasma Production in a Fast- and Automatically-controlled Radio Frequency Plasma Source Peer-reviewed

Kengo Hanaoka, Kazunori Takahashi, Ando And

IEEE Transactions on Plasma Science　48　(6)　2138-2142　2020/06
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI： 10.1109/tps.2020.2987554 　

ISSN： 0093-3813

eISSN： 1939-9375
Current status of a magnetic nozzle RF plasma thruster

Kazunori Takahashi, Christine Charles, Rod Boswell, Yoshinori Takao, Ando Akira

Space Solar Power System　5　14-17　2020/02
Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source Peer-reviewed

Y. Haba, K. Nagaoka, K. Tsumori, M. Kisaki, K. Takahashi, H. Nakano, K. Ikeda, S. Yoshimura, M. Osakabe

Japanese Journal of Applied Physics　59　(SH)　SHHA01-1-SHHA01-5　2020
Fast and automatic control of a frequency-tuned radiofrequency plasma source Peer-reviewed

Kazunori Takahashi, Kengo Hanaoka, Ando And

Frontiers in Physics　7　227-1-227-8　2020

DOI： 10.3389/fphy.2019.00227 　
Spatially- and vector-resolved momentum flux lost to a wall in a magnetic nozzle rf plasma thruster Peer-reviewed

Kazunori Takahashi, Takeharu Sugawara, Ando And

Scientific Reports　10　1061-1-1061-11　2020

DOI： 10.1038/s41598-020-58022-6 　
Minimal multi-target plasma sputtering tool Peer-reviewed

Kazunori Takahashi, Taichi Saito, Ando And, Yuki Yabuta, Hisashi Mizuguchi, Naoko Yamamoto, Ryuichiro Kamei, Shiro Hara

Vacuum　171　109000-1-109000-7　2020

DOI： 10.1016/j.vacuum.2019.109000 　
Spatiotemporal oscillation of an ion beam extracted from a potential-oscillating plasma source Peer-reviewed

Kazunori Takahashi, Tsuyoshi Imagi, Masashi Ishitomi, Kenichi Nagaoka, Yasuaki Haba, Haruhisa Nakano, And Akiro, Masashi Kisaki, Katsuyoshi Tsumori, Katsunori Ikeda

New Journal of Physics　21　093043-1-093043-9　2019/09

DOI： 10.1088/1367-2630/ab3f70 　

ISSN： 1367-2630
Performance improvement of a magnetic nozzle plasma thruster

Kazunori Takahashi, Yoshinori Takao, Akira Ando

Proceedings of the 36th International Electric Propulsion Conference　IEPC-2019　A855-1-A855-5　2019/09
Laboratory demonstration of a bidirectional helicon plasma thruster for space debris removal

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

Proceedings of the 36th International Electric Propulsion Conference　IEPC-2019　A852-1-A852-6　2019/09
Low-magnetic-field enhancement of thrust imparted by a stepped-diameter and downstream-gas-injected rf plasma thruster Peer-reviewed

Kazunori Takahashi, Yoshinori Takao, And Akiro

Plasma Sources Science and Technology　28　085014-1-085014-8　2019/08

DOI： 10.1088/1361-6595/ab3100 　
Simultaneous Measurements of Local Axial and Radial Momentum Fluxes near a Radial Wall of a Helicon Source Peer-reviewed

Takeharu SUGAWARA, Kazunori TAKAHASHI, Akira ANDO

Plasma and Fusion Research　14　1301143-1-1301143-4　2019/08

DOI： 10.1585/pfr.14.1301143 　
Helicon‑type radiofrequency plasma thrusters and magnetic plasma nozzles Invited Peer-reviewed

Kazunori Takahashi

Reviews of Modern Plasma Physics　3　3-1-3-61　2019/05

DOI： 10.1007/s41614-019-0024-2 　
Inhibitation of substrate heating in a minimal multi-target helicon sputtering tool

Taichi Saito, Kazunori Takahashi, Akira Ando, Shiro Hara

IEEE International Symposium on Semiconductor Manufacturing Conference Proceedings　2018-　2019/02/22
Publisher: Institute of Electrical and Electronics Engineers Inc.
DOI： 10.1109/ISSM.2018.8651176 　

ISSN： 1523-553X
Enhancement of downstream plasma density by a stepped-diameter radiofrequency plasma source under a static magnetic field for a compact sputtering reactor Peer-reviewed

Taichi Saito, Kazunori Takahashi, And Akiro, Shiro Hara

Vacuum　163　269-274　2019

DOI： 10.1016/j.vacuum.2019.02.036 　
Development of a momentum vector measurement instrument in steady-state plasmas Peer-reviewed

Kazunori Takahashi, Takeharu Sugawara, Hikaru Akahoshi, Yoshinori Takao, Ando Akiro

AIP Advances　8　105117-1-105117-10　2018/10

DOI： 10.1063/1.5050553 　
Demonstrating a new technology for space debris removal using a bi-directional plasma thruster Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W Boswell, And Akiro

Scientific Reports　8　14417-1-14417-10　2018/09

DOI： 10.1038/s41598-018-32697-4 　
Filtering peripheral high temperature electrons in a cylindrical rf-driven plasmas by an axisymmetric radial magnetic field Peer-reviewed

Hikaru Akahoshi, Kazunori Takahashi, And Akiro

AIP Advances　8　(3)　035208-1-035208-7　2018/03/01
Publisher: American Institute of Physics Inc.
DOI： 10.1063/1.5021804 　

ISSN： 2158-3226
Effects of neutral distribution and external magnetic field on plasma momentum in electrodeless plasma thrusters Peer-reviewed

Kazuki Takase, Kazunori Takahashi, Yoshinori Takao

Physics of Plasmas　25　(2)　023507-1-023507-8　2018/02/01
Publisher: American Institute of Physics Inc.
DOI： 10.1063/1.5015937 　

ISSN： 1089-7674 1070-664X
Adiabatic Expansion of Electron Gas in a Magnetic Nozzle Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, And Akiro

Physical Review Letters　120　(4)　045001-1-045001-5　2018/01/26
Publisher: American Physical Society
DOI： 10.1103/PhysRevLett.120.045001 　

ISSN： 1079-7114 0031-9007
Thrust imparted by a stepped-diameter magnetic nozzle rf plasma thruster Peer-reviewed

Kazunori Takahashi, Yoshinori Takao, And Akiro

Applied Physics Letters　113　034101-1-034101-4　2018

DOI： 10.1063/1.5041034 　
Numerical Investigation of Neutral-Injection Effect on an Electrodeless Plasma Thruster Peer-reviewed

Kazuki TAKASE, Kazunori TAKAHASHI, Yoshinori TAKAO

Transactions on JSASS Aerospace Technology, Japan　16　(2)　105-109　2018

DOI： 10.2322/tastj.16.105 　
High temperature electrons exhausted from rf plasma sources along a magnetic nozzle Peer-reviewed

Kazunori Takahashi, Hikaru Akahoshi, Christine Charles, Rod W. Boswell, And Akiro

PHYSICS OF PLASMAS　24　(8)　084503-1-084503-4　2017/08

DOI： 10.1063/1.4990110 　

ISSN： 1070-664X

eISSN： 1089-7674
Frequency-tuning radiofrequency plasma source operated in inductively-coupled mode under a low magnetic field Peer-reviewed

Kazunori Takahashi, Yudai Nakano, And Akiro

JOURNAL OF PHYSICS D-APPLIED PHYSICS　50　(26)　265201-1-265201-6　2017/07

DOI： 10.1088/1361-6463/aa7524 　

ISSN： 0022-3727

eISSN： 1361-6463
Laboratory Observation of a Plasma-Flow-State Transition from Diverging to Stretching a Magnetic Nozzle Peer-reviewed

Kazunori Takahashi, Akira Ando

PHYSICAL REVIEW LETTERS　118　(22)　225002-1-225002-5　2017/06

DOI： 10.1103/PhysRevLett.118.225002 　

ISSN： 0031-9007

eISSN： 1079-7114
Enhancement of axial momentum lost to the radial wall by the upstream magnetic field in a helicon source Invited Peer-reviewed

Kazunori Takahashi, And Akiro

PLASMA PHYSICS AND CONTROLLED FUSION　59　(5)　054007-1-054004-7　2017/05

DOI： 10.1088/1361-6587/aa626f 　

ISSN： 0741-3335

eISSN： 1361-6587
The mini-helicon thruster for 'CubeSat' nano-satellites: Experiments and simulations

Alex Bennet, Kazunori Takahashi, Christine Charles, Andrew Bish, Rod Boswell, Akira Ando, Robert Georges, Abdessamad Benidar

Proceedings of the International Astronautical Congress, IAC　13　8813-8816　2017
Publisher: International Astronautical Federation, IAF
ISSN： 0074-1795
Thrusters: Current-Free Plasma Invited Peer-reviewed

Kazunori Takahashi

Encyclopedia of Plasma Technology　1462-1472　2017

DOI： 10.1081/E-EPLT-120053924 　
Modifications of plasma density profile and thrust by neutral injection in a helicon plasma thruster Peer-reviewed

Kazunori Takahashi, Yoshinori Takao, And Akiro

APPLIED PHYSICS LETTERS　109　(19)　194101-1-194101-4　2016/11

DOI： 10.1063/1.4967193 　

ISSN： 0003-6951

eISSN： 1077-3118
Experimental identification of an azimuthal current in a magnetic nozzle of a radiofrequency plasma thruster Peer-reviewed

Kazunori Takahashi, Aiki Chiba, Atsushi Komura, And Akiro

PLASMA SOURCES SCIENCE & TECHNOLOGY　25　(5)　055011-1-055011-1　2016/10

DOI： 10.1088/0963-0252/25/5/055011 　

ISSN： 0963-0252

eISSN： 1361-6595
Operating a magnetic nozzle helicon thruster with strong magnetic field Peer-reviewed

Kazunori Takahashi, Atsushi Komura, And Akiro

PHYSICS OF PLASMAS　23　(3)　033505-1-033505-7　2016/03

DOI： 10.1063/1.4943406 　

ISSN： 1070-664X

eISSN： 1089-7674
Standing Helicon Wave Induced by a Rapidly Bent Magnetic Field in Plasmas Peer-reviewed

Kazunori Takahashi, Sho Takayama, Atsushi Komuro, Akira Ando

PHYSICAL REVIEW LETTERS　116　(13)　135001-1-135001-5　2016/03

DOI： 10.1103/PhysRevLett.116.135001 　

ISSN： 0031-9007

eISSN： 1079-7114
Neutral-depletion-induced axially asymmetric density in a helicon source and imparted thrust Peer-reviewed

Kazunori Takahashi, Yoshinori Takao, Akira Ando

APPLIED PHYSICS LETTERS　108　(7)　074103-1-074103-4　2016/02

DOI： 10.1063/1.4942469 　

ISSN： 0003-6951

eISSN： 1077-3118
Degradation of acetic acid in water using gas-liquid plasma with SPG membrane Peer-reviewed

Guanyang Tang, Atsushi Komuro, Kazunori Takahashi, Akira Ando

Plasma and Fusion Research　11　(1)　2406025　2016
Publisher: Japan Society of Plasma Science and Nuclear Fusion Research
DOI： 10.1585/pfr.11.2406025 　

ISSN： 1880-6821
Evaluation of SF6 reactive ion etching performance with a permanent magnet located behind the substrate based on a simple design concept Peer-reviewed

Taisei Motomura, Kazunori Takahashi, Yuji Kasashima, Kazuya Kikunaga, Fumihiko Uesugi, Akira Ando

Journal of the Vacuum Society of Japan　59　(1)　11-15　2016
Publisher: Vacuum Society of Japan
DOI： 10.3131/jvsj2.59.11 　

ISSN： 1882-2398
Thrust enhanced by a magnetic Laval nozzle in an applied-field magneto-plasma-dynamic thruster Peer-reviewed

Hiroaki Nabuchi, Kiyotaka Suzuki, Yohei Kobayashi, Atsushi Komuro, Kazunori Takahashi, Akira Ando

Plasma and Fusion Research　11　(1)　2406033-1-2406033-4　2016
Publisher: Japan Society of Plasma Science and Nuclear Fusion Research
DOI： 10.1585/pfr.11.2406033 　

ISSN： 1880-6821
Characteristics of a large diameter radio-frequency negative hydrogen ion source Peer-reviewed

Yuko Sasaki, Sho Takayama, Haruhisa Nakano, Atsushi Komuro, Kazunori Takahashi, Akira Ando

Plasma and Fusion Research　11　(1)　2405088-1-2405088-4　2016
Publisher: Japan Society of Plasma Science and Nuclear Fusion Research
DOI： 10.1585/pfr.11.2405088 　

ISSN： 1880-6821
Numerical validation of axial plasma momentum lost to a lateral wall induced by neutral depletion Peer-reviewed

Yoshinori Takao, Kazunori Takahashi

PHYSICS OF PLASMAS　22　(11)　113509-1-113509-6　2015/11

DOI： 10.1063/1.4935903 　

ISSN： 1070-664X

eISSN： 1089-7674
Effect of propellant species on thrust imparted by a helicon plasma thruster

Aiki Chiba, Kazunori Takahashi

Proceedings of the 34th International Electric Propulsion Conference　2015/11
Non-Local Electron Energy Probability Function in a Plasma Expanding along a Magnetic Nozzle

Rod Boswell, Kazunori Takahashi, Christine Charles, Igor Kaganovich

Proceedings of the 34th International Electric Propulsion Conference　2015/11
Recent Progress of a Helicon Plasma Thruster Development

Kazunori Takahashi, Atsushi Komuro, Akira Ando

Proceedings of the 34th International Electric Propulsion Conference　2015/11
Helicon Magnetoplasmadynamic Plasma Thruster for Large Thrust and High Specific Impulse Electric Propulsion

Kazunori Takahashi, Atsushi Komuro, Akira Ando

Proceedings of the 34th International Electric Propulsion Conference　2015/11
Effect of source diameter on helicon plasma thruster performance and its high power operation Peer-reviewed

Kazunori Takahashi, Atsushi Komuro, Akira Ando

PLASMA SOURCES SCIENCE & TECHNOLOGY　24　(5)　055004-1-055004-8　2015/10

DOI： 10.1088/0963-0252/24/5/055004 　

ISSN： 0963-0252

eISSN： 1361-6595
Characterization of Helicon Plasma Thruster Performance Operated for Various Rare Gas Propellants Peer-reviewed

Aiki Chiba, Kazunori Takahashi, Atsushi Komuro, Akira Ando

JOURNAL OF PROPULSION AND POWER　31　(3)　962-965　2015/05

DOI： 10.2514/1.B35609 　

ISSN： 0748-4658

eISSN： 1533-3876
Axial Momentum Lost to a Lateral Wall of a Helicon Plasma Source Peer-reviewed

Kazunori Takahashi, Aiki Chiba, Atsushi Komuro, Akira Ando

PHYSICAL REVIEW LETTERS　114　(19)　195001-1-195001-5　2015/05

DOI： 10.1103/PhysRevLett.114.195001 　

ISSN： 0031-9007

eISSN： 1079-7114
Measurement of plasma momentum exerted on target by a small helicon plasma thruster and comparison with direct thrust measurement Peer-reviewed

Kazunori Takahashi, Atsushi Komuro, Akira Ando

REVIEW OF SCIENTIFIC INSTRUMENTS　86　(2)　023505-1-023505-6　2015/02

DOI： 10.1063/1.4907797 　

ISSN： 0034-6748

eISSN： 1089-7623
Testing a sheath-compensated Langmuir probe in geometrically and magnetically expanding plasmas Peer-reviewed

Kazunori Takahashi, Hiroki Higashiyama, Koichi Takaki, Akira Ando

JAPANESE JOURNAL OF APPLIED PHYSICS　54　(1)　01AB01-1-01AB01-5　2015/01

DOI： 10.7567/JJAP.54.01AB01 　

ISSN： 0021-4922

eISSN： 1347-4065
Temporal and spatial distributions of carbon shunting arc plasma Peer-reviewed

Koichi Takaki, Takumi Konishi, Ryota Mikawa, Kazunori Takahashi, Ken Yukimura

JAPANESE JOURNAL OF APPLIED PHYSICS　54　(1)　01AA04-1-01AA04-5　2015/01

DOI： 10.7567/JJAP.54.01AA04 　

ISSN： 0021-4922

eISSN： 1347-4065
High-power, low-pressure, inductively coupled RF plasma source using a FET-based inverter power supply Peer-reviewed

Shota Komizunai, Kohei Oikawa, Yuta Saito, Kazunori Takahashi, Akira Ando

JAPANESE JOURNAL OF APPLIED PHYSICS　54　(1)　01AA08-1-01AA08-　2015/01

DOI： 10.7567/JJAP.54.01AA08 　

ISSN： 0021-4922

eISSN： 1347-4065
Non-local electron energy probability function in a plasma expanding along a magnetic nozzle Peer-reviewed

Rod W. Boswell, Kazunori Takahahsi, Christine Charles, Igor D. Kaganovich

Frontiers in Physics　3　14-1-14-5　2015
Effect of external magnetic field on compact inductively-coupled reactive ion etching reactor Peer-reviewed

Taisei Motomura, Kazunori Takahashi, Yuji Kasashima, Fumihiko Uesugi, Akira Ando

Journal of the Vacuum Society of Japan　58　(10)　392-396　2015
Publisher: Vacuum Society of Japan
DOI： 10.3131/jvsj2.58.392 　

ISSN： 1882-2398
Catalyst Effect on Degradation of Organism by Nanoseconds Pulsed Discharge in Gas-liquied Mixture Peer-reviewed

Guanyang TANG, Ryosuke OHNO, Atsushi KOMURO, Kazunori TAKAHASHI, Akira ANDO

Plasma and Fusion Research　10　3406022-1-3406022-4　2015

DOI： 10.1585/pfr.10.3406022 　
Development of a 15-kW Class RF Plasma Source for VASIMR Type Space Propulsion with Magnetic Nozzle Peer-reviewed

Yusuke HOSHINO, Takayoshi ISHIYAMA, Atsushi KOMURO, Kazunori TAKAHASHI and, Akira ANDO

Plasma and Fusion Research　10　3406052-1-3406052-4　2015

DOI： 10.1585/pfr.10.3406052 　
Modifications of wave and plasma structures by a mechanical aperture in a helicon plasma thruster Peer-reviewed

Kazunori Takahashi, Aiki Chiba, Akira Ando

PLASMA SOURCES SCIENCE & TECHNOLOGY　23　(6)　064005-1-064005-9　2014/12

DOI： 10.1088/0963-0252/23/6/064005 　

ISSN： 0963-0252

eISSN： 1361-6595
Low-pressure, high-density, and supersonic plasma flow generated by a helicon magnetoplasmadynamic thruster Peer-reviewed

Kazunori Takahashi, Atsushi Komuro, Akira Ando

APPLIED PHYSICS LETTERS　105　(19)　193503-1-193503-4　2014/11

DOI： 10.1063/1.4901744 　

ISSN： 0003-6951

eISSN： 1077-3118
Transport of a helicon plasma by a convergent magnetic field for high speed and compact plasma etching Peer-reviewed

Kazunori Takahashi, Taisei Motomura, Akira Ando, Yuji Kasashima, Kazuya Kikunaga, Fumihiko Uesugi, Shiro Hara

JOURNAL OF PHYSICS D-APPLIED PHYSICS　47　(42)　425201-1-425201-6　2014/10

DOI： 10.1088/0022-3727/47/42/425201 　

ISSN： 0022-3727

eISSN： 1361-6463
Observation of Stationary Plasma Striation and Collimated Plasma Transport in a 100-kHz Inductively Coupled Plasma Discharge Peer-reviewed

Kazunori Takahashi, Akira Ando

IEEE TRANSACTIONS ON PLASMA SCIENCE　42　(10)　2784-2785　2014/10

DOI： 10.1109/TPS.2014.2308893 　

ISSN： 0093-3813

eISSN： 1939-9375
Effect of magnetic and physical nozzles on plasma thruster performance Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, Akira Ando

PLASMA SOURCES SCIENCE & TECHNOLOGY　23　(4)　044004-1-044004-9　2014/08

DOI： 10.1088/0963-0252/23/4/044004 　

ISSN： 0963-0252

eISSN： 1361-6595
Experimental identification of thrust components imparted by an electrodeless helicon plasma thruster Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

Transactions of JSASS, Aerospace Technology Japan　12　(29)　Pb1-Pb6　2014/04
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/tastj.12.Pb_1 　

ISSN： 1884-0485

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Thrust components imparted by an electrodeless helicon plasma thruster including a magnetic nozzle are experimentally measured and analytically derived from momentum equations assuming a cold ion, negligible electron inertia and radial ion inertia. The magnetic nozzle of the maximum field strength of ~180 Gauss is provided by a solenoid coil located near the thruster exit. It is found that the total thrust can be given by the sum of an electron pressure force onto the source boundary and a Lorentz force generated by a radial magnetic field and an azimuthal electron diamagnetic drift current in the magnetic nozzle. Further, a permanent magnet helicon plasma thruster for more efficient and compact plasma thruster is also designed and tested.
Performance characterization of a helicon plasma thruster with annualr magnet Peer-reviewed

Kazuaki Miyamoto, Kazunori Takahashi, Koichi Takaki, Tamiya Fujiwara, Akira Ando

Transactions of JSASS, Aerospace Technology Japan　12　(29)　Tb5-Tb9　2014/04
Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
DOI： 10.2322/tastj.12.Tb_5 　

ISSN： 1884-0485

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Measurements of plasma parameters and thrust imparted from the compact helicon source having an annular permanent magnet in addition to the previously reported magnet configuration are performed, where two different diameter annular permanent magnets of the 5.4-cm-diam and the 8-cm-diam are tested. The source diameter, the working argon gas pressure, and the 13.56 MHz rf power are chosen as 6.6 cm, 0.85 mTorr, and 500-2000 W, respectively. Both the plasma density in the magnetic nozzle and the measured thrust for the 8-cm-diam annular magnet are higher than that for the 5.4-cm-diam one. The thrust can be increased by the effective rf power, and reaches a maximum of about 9 mN and 6 mN for the 8-cm-diam and the 5.4-cm-diam annular magnet, respectively. As some of the plasma flow is trapped by the closed field lines near the annular magnets, the obtained thrust is lower than the configuration with no annular magnet.
Curret-free plasma thruster controlling cross-field diffusion under a magnetic nozzle Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

JPS Conference Proceedings　1　015008-1-015008-5　2014/03
Effect of a magnetic nozzle in a MPD thruster Peer-reviewed

Yuuki Izawa, Kiyotaka Suzuki, Kazunori Takahashi, Akira Ando

JPS Conference Proceedings　1　015046-1-015046-4　2014/03
Large diameter permanent-magnets-expanded plasma source for spontaneous generation of low-energy ion beam Peer-reviewed

Kazunori Takahashi, Tatsuya Suzuki, Akira Ando

REVIEW OF SCIENTIFIC INSTRUMENTS　85　(2)　02C101-1-02C101-3　2014/02

DOI： 10.1063/1.4826542 　

ISSN： 0034-6748

eISSN： 1089-7623
Radiofrequency hydrogen ion source with permanent magnets providing axial magnetic field Peer-reviewed

Kohei Oikawa, Yuta Saito, Shota Komizunai, Kazunori Takahashi, Akira Ando

REVIEW OF SCIENTIFIC INSTRUMENTS　85　(2)　02B124-1-02B124-3　2014/02

DOI： 10.1063/1.4849696 　

ISSN： 0034-6748

eISSN： 1089-7623
Development of a compact magnetically expanding plasma source with a strong magnetic field Peer-reviewed

Kazunori Takahashi, Daiki Sato, Koichi Takaki, Akira Ando

PLASMA SOURCES SCIENCE & TECHNOLOGY　22　(5)　055002-1-055002-5　2013/10

DOI： 10.1088/0963-0252/22/5/055002 　

ISSN： 0963-0252
Helicon plasma thruster experiment controlling cross-field diffusion within a magnetic nozzle

K. Takahashi, C. Charles, R.W. Boswell, A. Ando

Proceedings of the 33rd International Electric Propulsion Conference　IEPC-2013　163-1-163-7　2013/10
Enhancement of thrust performance of a MPD thruster with a magnetic nozzle

Akira Ando, Kazunori Takahashi, Yuuki Izawa, Kiyotaka Suzuki, Yusuke Hoshano

Proceedings of the 33rd International Electric Propulsion Conference　IEPC-2013　338-1-338-5　2013/10
Performance improvement of a permanent magnet helicon plasma thruster Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, Akira Ando

Journal of Physics D: Applied Physics　46　(35)　352001-1-352001-5　2013/09/04

DOI： 10.1088/0022-3727/46/35/352001 　

ISSN： 0022-3727 1361-6463
2-D Measurement of Charged Particles Diffusing from a Double DC Corona Discharge Ionizer Peer-reviewed

Kazunori Takahashi, Makoto Sato, Takahiro Ohkubo, Tamiya Fujiwara, Koichi Takaki

IEEE TRANSACTIONS ON PLASMA SCIENCE　41　(8)　1863-1868　2013/08

DOI： 10.1109/TPS.2013.2252610 　

ISSN： 0093-3813
Boltzmann expansion in a radiofrequency conical helicon thruster operating in xenon and argon Peer-reviewed

C. Charles, R. Boswell, K. Takahashi

Applied Physics Letters　102　(22)　223510　2013/06/03

DOI： 10.1063/1.4810001 　

ISSN： 0003-6951
DIRECT THRUST MEASUREMENT OF A PERMANENT-MAGNETS HELICON PLASMA THRUSTER FOR SPACE PROPULSION Peer-reviewed

Kazunori Takahashi

FUSION SCIENCE AND TECHNOLOGY　63　(1T)　123-126　2013/05

ISSN： 1536-1055

eISSN： 1943-7641
PRODUCTION OF A HIGH DENSITY HELICON PLASMA UNDER AN IGBT-DRIVEN PULSED STRONG MAGNETIC FIELD Peer-reviewed

Kazunori Takahash, Daiki Sato

FUSION SCIENCE AND TECHNOLOGY　63　(1T)　395-397　2013/05

ISSN： 1536-1055

eISSN： 1943-7641
Large-diameter permanent-magnets-expanding plasma source applicable to an electrodeless plasma thruster Peer-reviewed

Tatsuya Suzuki, Kazunori Takahashi

Fusion Science and Technology　63　398-400　2013/05
PRODUCTION OF A PERIODIC PLASMA STRUCTURE BY 400 KHz CAPACITIVELY COUPLED DISCHARGE Peer-reviewed

Kazuaki Miyamoto, Kazunori Takahashi

FUSION SCIENCE AND TECHNOLOGY　63　(1T)　401-403　2013/05

ISSN： 1536-1055

eISSN： 1943-7641
Approaching the Theoretical Limit of Diamagnetic-Induced Momentum in a Rapidly Diverging Magnetic Nozzle Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell

PHYSICAL REVIEW LETTERS　110　(19)　195003　2013/05

DOI： 10.1103/PhysRevLett.110.195003 　

ISSN： 0031-9007
Observation of a microwave bandgap in a one-dimensionally periodic low-pressure plasma structure Peer-reviewed

Kazunori Takahashi, Kazuaki Miyamoto

11TH APCPST (ASIA PACIFIC CONFERENCE ON PLASMA SCIENCE AND TECHNOLOGY) AND 25TH SPSM (SYMPOSIUM ON PLASMA SCIENCE FOR MATERIALS)　441　012011-1-012011-6　2013

DOI： 10.1088/1742-6596/441/1/012011 　

ISSN： 1742-6588
Investigation of radiofrequency plasma sources for space travel Invited Peer-reviewed

C. Charles, R. W. Boswell, K. Takahashi

PLASMA PHYSICS AND CONTROLLED FUSION　54　(12)　124021　2012/12

DOI： 10.1088/0741-3335/54/12/124021 　

ISSN： 0741-3335

eISSN： 1361-6587
Electron diamagnetic effect in a magnetic nozzle on a helicon plasma thruster performance

Kazunori Takahashi, Trevor Lafleur, Christine Charles, Peter Alexander, Rod Boswell

Bulletin of the American Physical Society　57　(8)　16-16　2012/10
Performance characterization of a permanent-magnet helicon plasma thruster

Kazunori Takahashi, Christine Charles, Rod Boswell

Bulletin of the American Physical Society　57　(8)　96-96　2012/10
Axial force imparted by a current-free magnetically expanding plasma Peer-reviewed

Kazunori Takahashi, Trevor Lafleur, Christine Charles, Peter Alexander, Rod W. Boswell

PHYSICS OF PLASMAS　19　(8)　083509　2012/08

DOI： 10.1063/1.4747701 　

ISSN： 1070-664X
Radiofrequency antenna for suppression of parasitic discharges in a helicon plasma thruster experiment Peer-reviewed

Kazunori Takahashi

REVIEW OF SCIENTIFIC INSTRUMENTS　83　(8)　083508　2012/08

DOI： 10.1063/1.4748271 　

ISSN： 0034-6748
Electron Diamagnetic Effect on Axial Force in an Expanding Plasma: Experiments and Theory Invited Peer-reviewed

K. Takahashi, T. Lafleur, C. Charles, P. Alexander, R.W. Boswell

Asia-Pacific Physics Newsletters　1　18-18　2012/05
A magnetic nozzle calculation of the force on a plasma Peer-reviewed

A. Fruchtman, K. Takahashi, C. Charles, R. W. Boswell

PHYSICS OF PLASMAS　19　(3)　033507　2012/03

DOI： 10.1063/1.3691650 　

ISSN： 1070-664X
Axial force imparted by a conical radiofrequency magneto-plasma thruster Peer-reviewed

C. Charles, K. Takahashi, R. W. Boswell

APPLIED PHYSICS LETTERS　100　(11)　113504　2012/03

DOI： 10.1063/1.3694281 　

ISSN： 0003-6951
Discharge Formation of DBD With Floating Electrode Array at Atmospheric Pressure in Mixed Gas of Helium and Nitrogen Peer-reviewed

So Matsumoto, Kazunori Takahashi, Seiji Mukaigawa, Koichi Takaki, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2148-2149　2011/11

DOI： 10.1109/TPS.2011.2165085 　

ISSN： 0093-3813
High-Density Blue-Mode Argon Plasma Under an Expanding Magnetic Field Provided by Permanent Magnets Peer-reviewed

Kazunori Takahashi, Yutaka Shida, Hisashi Chiba, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2438-2439　2011/11

DOI： 10.1109/TPS.2011.2143694 　

ISSN： 0093-3813
Development of a 13-cm-Diameter Permanent-Magnets-Expanding Plasma Source Providing a Supersonic Ion Beam Peer-reviewed

Yuki Itoh, Kazunori Takahashi, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2440-2441　2011/11

DOI： 10.1109/TPS.2011.2140335 　

ISSN： 0093-3813
Energetic Electrons Moving Along Peripheral Magnetic Field Lines in Magnetically Expanding Plasmas Peer-reviewed

Yuichi Igarashi, Kazunori Takahashi, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2442-2443　2011/11

DOI： 10.1109/TPS.2011.2143432 　

ISSN： 0093-3813
Ion Energy Distributions in a Permanent-Magnet-Expanded Plasma Containing an Electric Double Layer Peer-reviewed

Kazunori Takahashi, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2444-2445　2011/11

DOI： 10.1109/TPS.2011.2157708 　

ISSN： 0093-3813
Production of a Periodic Plasma Structure for Basic Experiments on Plasma Photonic Crystals in Microwave Range Peer-reviewed

Kazunori Takahashi, Toshihiro Terui, Hisashi Chiba, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2504-2505　2011/11

DOI： 10.1109/TPS.2011.2140336 　

ISSN： 0093-3813
Plasma Expansion From a Radio Frequency Microdischarge Peer-reviewed

Rod Boswell, Christine Charles, Peter Alexander, James Dedrick, Kazunori Takahashi

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2512-2513　2011/11

DOI： 10.1109/TPS.2011.2143434 　

ISSN： 0093-3813
Induction of Gaseous and Metal Source Plasmas by Carbon Shunting Arc Peer-reviewed

Hironori Aoki, Kazunori Takahashi, Koichi Takaki, Tamiya Fujiwara

IEEE TRANSACTIONS ON PLASMA SCIENCE　39　(11)　2912-2913　2011/11

DOI： 10.1109/TPS.2011.2158591 　

ISSN： 0093-3813

eISSN： 1939-9375
Electron Diamagnetic Effect on Axial Force in an Expanding Plasma: Experiments and Theory Peer-reviewed

Kazunori Takahashi, Trevor Lafleur, Christine Charles, Peter Alexander, Rod W. Boswell

PHYSICAL REVIEW LETTERS　107　(23)　235001　2011/11

DOI： 10.1103/PhysRevLett.107.235001 　

ISSN： 0031-9007
Direct thrust measurements and modelling of a radio-frequency expanding plasma thruster Peer-reviewed

T. Lafleur, K. Takahashi, C. Charles, R. W. Boswell

PHYSICS OF PLASMAS　18　(8)　080701　2011/08

DOI： 10.1063/1.3610570 　

ISSN： 1070-664X
Electron Energy Distribution of a Current-Free Double Layer: Druyvesteyn Theory and Experiments Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell, Tamiya Fujiwara

PHYSICAL REVIEW LETTERS　107　(3)　035002　2011/07

DOI： 10.1103/PhysRevLett.107.035002 　

ISSN： 0031-9007
Direct thrust measurement of a permanent magnet helicon double layer thruster Peer-reviewed

K. Takahashi, T. Lafleur, C. Charles, P. Alexander, R. W. Boswell, M. Perren, R. Laine, S. Pottinger, V. Lappas, T. Harle, D. Lamprou

APPLIED PHYSICS LETTERS　98　(14)　141503　2011/04

DOI： 10.1063/1.3577608 　

ISSN： 0003-6951
Operation of a permanent-magnets-expanding plasma source connected to a large-volume diffusion chamber Peer-reviewed

Kazunori Takahashi, Yuki Itoh, Tamiya Fujiwara

JOURNAL OF PHYSICS D-APPLIED PHYSICS　44　(1)　015204　2011/01

DOI： 10.1088/0022-3727/44/1/015204 　

ISSN： 0022-3727
Ion acceleration enhanced by additional neutralizing electrons in a magnetically expanding double layer plasma Peer-reviewed

Kazunori Takahashi, Tamiya Fujiwara

PHYSICS OF PLASMAS　17　(10)　104505　2010/10

DOI： 10.1063/1.3499691 　

ISSN： 1070-664X
Double-layer ion acceleration triggered by ion magnetization in expanding radiofrequency plasma sources Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod W. Boswell, Tamiya Fujiwara

APPLIED PHYSICS LETTERS　97　(14)　141503　2010/10

DOI： 10.1063/1.3499653 　

ISSN： 0003-6951
High-powered operation of a magnetically expanding plasma using permanent magnets Peer-reviewed

Kaoru Oguni, Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

Journal of Plasma and Fusion Research SERIES　9　410-415　2010/08
Effects of the magnetic fields on ion beam energy in a magnetically expanding plasma Peer-reviewed

Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

Journal of Plasma and Fusion Research SERIES　9　381-386　2010/08
Electron energy distributions in a radiofrequency plasma expanded by permanent magnets Peer-reviewed

Tomoyo Sasaki, Kazunori Takahashi, Tamiya Fujiwara

Journal of Plasma and Fusion Research SERIES　9　422-427　2010/08
Plane and hemispherical potential structures in magnetically expanding plasmas Peer-reviewed

Kazunori Takahashi, Yuichi Igarashi, Tamiya Fujiwara

APPLIED PHYSICS LETTERS　97　(4)　041501　2010/07

DOI： 10.1063/1.3467857 　

ISSN： 0003-6951
Characteristics of an ion beam in a magnetically expanding plasma using permanent magnets Peer-reviewed

Kazunori Takahashi, Tamiya Fujiwara

JAXA Research and Development Report　09　(003)　74-79　2010/05
Magnetic-field-induced enhancement of ion beam energy in a magnetically expanding plasma using permanent magnets Peer-reviewed

Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

PLASMA SOURCES SCIENCE & TECHNOLOGY　19　(2)　025004　2010/04

DOI： 10.1088/0963-0252/19/2/025004 　

ISSN： 0963-0252
Characterization of the temperature of free electrons diffusing from a magnetically expanding current-free double layer plasma Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, Michael A. Lieberman, Rikizo Hatakeyama

JOURNAL OF PHYSICS D-APPLIED PHYSICS　43　(16)　162001　2010/04

DOI： 10.1088/0022-3727/43/16/162001 　

ISSN： 0022-3727
Characteristics of electron cyclotron waves creating field-aligned and transverse plasma-potential structures Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama, A. Fukuyama

PLASMA PHYSICS AND CONTROLLED FUSION　51　(12)　125007　2009/12

DOI： 10.1088/0741-3335/51/12/125007 　

ISSN： 0741-3335
Double Layer Formation in a Low-Pressure Argon Plasma Expanded by Permanent Magnets Peer-reviewed

Kazunori Takahashi, Kaoru Oguni, Hiroshi Yamada, Tamiya Fujiwara

Journal of Plasma and Fusion Research SERIES　8　1269-1272　2009/10
Spatial characterization of the plasma density in a magnetically expanding plasma using permanent magnets Peer-reviewed

Tomoyo Sasaki, Kazunori Takahashi, Kaoru Oguni, Tamiya Fujiwara

Journal of Plasma and Fusion Research SERIES　8　724-727　2009/10
Supersonic Ion Beam Driven by Permanent-Magnets-Induced Double Layer in an Expanding Plasma Peer-reviewed

Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara, Kaoru Oguni

IEEE TRANSACTIONS ON PLASMA SCIENCE　37　(8)　1532-1536　2009/08

DOI： 10.1109/TPS.2009.2024342 　

ISSN： 0093-3813
Transport of energetic electrons in a magnetically expanding helicon double layer plasma Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, Wes Cox, Rikizo Hatakeyama

APPLIED PHYSICS LETTERS　94　(19)　191503　2009/05

DOI： 10.1063/1.3136721 　

ISSN： 0003-6951
Observation of weakly and strongly diverging ion beams in a magnetically expanding plasma Peer-reviewed

K. Takahashi, T. Fujiwara

APPLIED PHYSICS LETTERS　94　(6)　061502　2009/02

DOI： 10.1063/1.3080205 　

ISSN： 0003-6951
Neutralization by a corona discharge ionizer in nitrogen atmosphere Peer-reviewed

Toru Ikeuchi, Kazunori Takahashi, Takahiro Ohkubo, Tamiya Fujiwara

IEEJ Transactions on Fundamentals and Materials　129　(3)　5-152　2009

DOI： 10.1541/ieejfms.129.146 　

ISSN： 0385-4205 1347-5533
Expanding plasma source using permanent magnets for generation of supersonic ion beam

Kazunori Takahashi, Hiroshi Yamada, Tamiya Fujiwara

Proceedings of International Interdisciplinary-Symposium on Gaseous and Liquid Plasmas　115-118　2008/09
Ion acceleration in a solenoid-free plasma expanded by permanent magnets Peer-reviewed

K. Takahashi, K. Oguni, H. Yamada, T. Fujiwara

PHYSICS OF PLASMAS　15　(8)　084501　2008/08

DOI： 10.1063/1.2965497 　

ISSN： 1070-664X
Polarization reversal of electron cyclotron waves creating plasma-potential structures in laboratory plasmas Invited

Kazunori Takahashi, Toshiro Kaneko, Rikizo Hatakeyama

Proceedings of the XXIX General Assembly of the International Union of Radio Science　CD-ROM　2008/08
Double layer created by electron cyclotron resonance heating in an inhomogeneously magnetized plasma with high-speed ion flow Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

PHYSICS OF PLASMAS　15　(7)　072108　2008/07

DOI： 10.1063/1.2951997 　

ISSN： 1070-664X
Radial characterization of the electron energy distribution in a helicon source terminated by a double layer Peer-reviewed

Kazunori Takahashi, Christine Charles, Rod Boswell, Rikizo Hatakeyama

PHYSICS OF PLASMAS　15　(7)　074505　2008/07

DOI： 10.1063/1.2959137 　

ISSN： 1070-664X
Field-aligned and transverse plasma-potential structures induced by electron cyclotron waves Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

APPLIED PHYSICS LETTERS　91　(26)　261502　2007/12

DOI： 10.1063/1.2827575 　

ISSN： 0003-6951
Measurement of the energy distribution of trapped and free electrons in a current-free double layer Peer-reviewed

K. Takahashi, C. Charles, R. W. Boswell, T. Kaneko, R. Hatakeyama

PHYSICS OF PLASMAS　14　(11)　114503　2007/11

DOI： 10.1063/1.2803763 　

ISSN： 1070-664X
Verification of Polarization Reversal of Electromagnetic Waves with Electron Cyclotron Frequency Controlling Plasma Structure Formation Peer-reviewed

T. Kaneko, K. Takahashi, R. Hatakeyama

Plasma and Fusion Research　2　038-1-038-10　2007/08
Publisher: The Japan Society of Plasma Science and Nuclear Fusion Research
DOI： 10.1585/pfr.2.038 　

ISSN： 1880-6821

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Selectively launched electromagnetic waves with left- and right-handed polarizations for m = 0, +1, and -1 modes are investigated in terms of polarization reversal around an electron cyclotron resonance (ECR) region in inhomogeneously magnetized plasmas, where m is an azimuthal mode number. It is observed for the first time that a left-handed polarized wave for m = 0 mode is absorbed near the ECR point as a result of the polarization reversal in the axial direction. Dispersion analysis in bounded plasmas can explain this quantitatively. For m = +1 and -1 modes, on the other hand, polarization reversal occurs along the radial axis, i.e., wave polarization for m = +1 mode is right-handed (left-handed for m = -1 mode) around the central area and left-handed (right-handed for m = -1 mode) around the peripheral area of the cross section of the plasma column. Furthermore, we investigate plasma-potential structures formed by ECR of high-power m = +1 and -1 waves and, for the first time, demonstrate control of the plasma-potential structure by changing the azimuthal mode, i.e., a positive potential hill is formed near the ECR point around the central and peripheral areas for m = +1 and -1 modes, respectively.
Nonlinear effects of high power plug/barrier electron cyclotron resonance heating on propagation and radiation of cyclotron waves Peer-reviewed

T. Kaneko, K. Takahashi, R. Hatakeyama, T. Saito, Y. Tatematsu, K. Nozaki, N. Machida, T. Kaitsuka, A. Itakura, M. Yoshikawa, T. Cho

FUSION SCIENCE AND TECHNOLOGY　51　(2T)　154-159　2007/02

ISSN： 1536-1055
One-dimensional analysis of polarization reversal relating to electron cyclotron resonance Peer-reviewed

K. Takahashi, A. Fukuyama, T. Kaneko, R. Hatakeyama

FUSION SCIENCE AND TECHNOLOGY　51　(2T)　313-315　2007/02

ISSN： 1536-1055
Generation of Flowing Nitrogen Ions in Magnetized Plasmas

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the Joint International Conference of the 4th International Symposium on System Construction of Global-Network-Oriented Information Electronics and Student-Organizing International Mini-Conference on Information Electronics　308-309　2007/01
電子サイクロトロン波の偏波方向反転とプラズマ電位構造制御 Peer-reviewed

高橋和貴

Journal of Plasma and Fusion Research　82　(11)　792-795　2006/11
Publisher:
Flow energy control of nitrogen ions generated by electron cyclotron resonance Peer-reviewed

Kazunori Takahashi, Toshiro Kaneko, Rikizo Hatakeyama

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　45　(10B)　8050-8054　2006/10

DOI： 10.1143/JJAP.45.8050 　

ISSN： 0021-4922
Development of a low temperature plasma source providing ion flow energy control Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

PLASMA SOURCES SCIENCE & TECHNOLOGY　15　(3)　495-500　2006/08

DOI： 10.1088/0963-0252/15/3/027 　

ISSN： 0963-0252
Absorption and penetration of left-hand polarized waves related to polarization reversal causing electron cyclotron resonance Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

PHYSICAL REVIEW E　74　(1)　016405　2006/07

DOI： 10.1103/PhysRevE.016405 　

ISSN： 1539-3755
New Aspects on Plasma Wave and Instability Phenomena － Flow Shear, Polarization Reversal, and Pair Ions －

R. Hatakeyama, T. Kaneko, W. Oohara, K. Takahashi

Proceedings of the 13th International Congress on Plasma Physics　E010　2006/05
Polarization-Reversal-Induced Absorption of an Axisymmetric Left-Hand Polarized Wave on Electron Cyclotron Resonance

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 13th International Congress on Plasma Physics　A176p　2006/05
Effects of Ion Flow Energy on Self-Consistent Double-Layer Formation Due to ECR in a Conversing Magnetic Field

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 13th International Congress on Plasma Physics　A155p　2006/05
Simultaneous control of ion flow energy and electron temperature in magnetized plasmas Peer-reviewed

K Takahashi, T Kaneko, R Hatakeyama

APPLIED PHYSICS LETTERS　88　(11)　111503　2006/03

DOI： 10.1063/1.2181653 　

ISSN： 0003-6951
Ion Flow Energy Control in Magnetized Plasmas

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 6th International Conference on Reactive Plasmas and 23rd Symposium on Plasma Processing　39-40　2006/01
Effects of polarization reversal on localized-absorption characteristics of electron cyclotron wave in bounded plasmas Peer-reviewed

K Takahashi, T Kaneko, R Hatakeyama

PHYSICS OF PLASMAS　12　(10)　102107　2005/10

DOI： 10.1063/1.2103547 　

ISSN： 1070-664X
Polarization-Reversal Induced Damping of Left-Hand Polarized Wave with High Order Radial Mode on Electron Cyclotron Resonance

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 28th General Assembly of International Union of Radio Science　H05p4　2005/10
Energy Control of Field-Aligned Ion Flow in Magnetized Plasmas

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 3rd Student-Organizing International Mini-Conference on Information Electronics System　87-90　2005/10
Development of Low-Temperature Plasma Source Suitable for Ion Flow Energy Control in Strong Magnetic Fields

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 27th International Conference on Phenomena in Ionized Gases　11-158　2005/07
Polarization-reversal-induced damping of left-hand polarized wave on electron cyclotron resonance Peer-reviewed

K Takahashi, T Kaneko, R Hatakeyama

PHYSICAL REVIEW LETTERS　94　(21)　215001　2005/06

DOI： 10.1103/PhysRevLett.94.215001 　

ISSN： 0031-9007
Electron Cyclotron Damping of Left-Hand Polarized Wave with High Order Radial Mode Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of Plasma Science Symposium 2005 / The 22nd Symposium on Plasma Processing　229-230　2005/01
Polarization Reversal of Electron Cyclotron Wave Due to Radial Boundary Condition

K. Takahashi, T. Kaneko, R. Hatakeyama

K. Takahashi, T. Kaneko, and R. Hatakeyama　P3-36　2004/10
A Polarization Reversal Mechanism of Electromagnetic Waves in Inhomogeneously Magnetized Plasmas

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 2nd Student-Organizing International Mini-Conference on Information Electronics Systems　49-52　2004/10
Localized Absorption of High-Frequency Electromagnetic Wave Due to Polarization Reversal near the ECR point

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the International COE Forum on Plasma Science and Technology　87-88　2004/04
Polarization Reversal and Electron Cyclotron Damping of Electromagnetic Wave in an Inhomogeneously Magnetized-Plasma-Filled Waveguide Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

Proceedings of the 1st Student-Organizing International Mini-Conference on Information Electronics System　48-51　2003/11
Damping Mechanisms of Left-Hand Polarized Wave near the Electron Cyclotron Resonance Point in an Inhomogeneously Magnetized Plasma Peer-reviewed

K. Takahahsi, T. Kaneko, R. Hatakeyama

Proceeding of the 30th European Physical Society Conference on Controlled Fusion and Plasma Physics　27A　P-2.22　2003/07
Observation of Polarization Reversal and Electron Cyclotron Damping Directly Associated with Obliquely Propagating Left-Hand Polarized Wave Peer-reviewed

K. Takahashi, T. Kaneko, R. Hatakeyama

Journal of Plasma and Fusion Research　79　(5)　447-448　2003/05
Publisher: The Japan Society of Plasma Science and Nuclear Fusion Research
DOI： 10.1585/jspf.79.447 　

ISSN： 0918-7928

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The polarization reversal from a left-hand (LHPW) to a right-hand polarized wave (RHPW) and the resultant electron cyclotron damping of the LHPW are experimentally observed for the first time. Our experimental results indicate that the polarization reversal arises simultaneously with the conversion of the propagation angle of the wave, in which finite-plasma boundary conditions are considered to be inherent.
Polarization reversal of circularly polarized wave related to electron cyclotron damping Peer-reviewed

K Takahashi, T Kaneko, R Hatakeyama

FUSION SCIENCE AND TECHNOLOGY　43　(1T)　95-97　2003/01

ISSN： 1536-1055

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Misc. 47

ヘリコンスラスタからの双方向プラズマ運動量放出とスペースデブリ除去

高橋和貴, CHARLES Christine, BOSWELL Rod, 安藤晃

日本物理学会講演概要集(CD-ROM)　74　(1)　ROMBUNNO.15pK309‐5　2019/03/22

ISSN： 2189-079X
ヘリコンスラスタ内壁への局所運動量損失ベクトルの分布評価

菅原丈晴, 高橋和貴, 鷹尾祥典, 安藤晃

日本物理学会講演概要集(CD-ROM)　74　(1)　ROMBUNNO.15pK309‐6　2019/03/22

ISSN： 2189-079X
Current status and issues of electric rocket propulsion for future missions ~Electromagnetic Thrusters~ Invited Peer-reviewed

ANDO Akira, TAKAHASHI Kazunori

Journal of Plasma and Fusion Research　94　(2)　76-80　2018
Effects of neutral distribution and external magnetic field on propulsion performance of electrodeless plasma thrusters

60　5p　2016/09/06
Publisher: 日本航空宇宙学会
ISSN： 1884-1945
Non-WKB Standing helicon wave due to a rapidly bent magnetic field

2016　(18)　81-85　2016/05/27
Publisher: 電気学会
27pAX-3 Helicon source with strong magnetic field for an experimental approach to an ideal magnetic nozzle helicon plasma thruster

Takahashi K., Sato D., Takaki K., Ando A.

Meeting abstracts of the Physical Society of Japan　69　(1)　241-241　2014/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Independent measurement of thrust components imparted from a magnetic nozzle helicon plasma thruster

Takahashi K., Charles C., Boswell R.W., Ando A.

Meeting abstracts of the Physical Society of Japan　68　(2)　195-195　2013/08/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Effect of applied magnetic field in an MPD Thruster

Ando Akira, Izawa Yuuki, Suzuki Kiyotaka, Hoshino Yusuke, Takahashi Kazunori

Meeting abstracts of the Physical Society of Japan　68　(2)　196-196　2013/08/26
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Magnetic nozzle modification by an expanding helicon plasma

HIGASHIYAMA Hiroki, SUZUKI Tatsuya, TAKAHASHI Kazunori, FUJIWARA Tamiya, TAKAKI Koichi

2013　(10)　45-50　2013/03/15
Generation of strong magnetic nozzle by a compact solenoid and application to helicon thruster

SATO Daiki, TAKAHASHI Kazunori, TAKAKI Koichi, FUJIWARA Tamiya

2012　(119)　45-48　2012/12/10
Generation of strong magnetic nozzle by a compact solenoid and application to helicon thruster

SATO Daiki, TAKAHASHI Kazunori, TAKAKI Koichi, FUJIWARA Tamiya

2012　(142)　45-48　2012/12/10
Characteristics of pulsed-dc shunting arc plasma and deposition of titanium carbide film

MIKAWA Ryota, TAKAHASHI Kazunori, TAKAKI Koichi, YUKIMURA Ken

2012　(29)　1-5　2012/08/08
Characteristics of a large-diameter permanent-magnets-expanding plasma source

SUZUKI Tatsuya, TAKAHASHI Kazunori, FUJIWARA Tamiya

2012　(29)　21-25　2012/08/08
Magnetic field effect on helicon plasma thruster performance

TAKAHASHI Kazunori, CHARLES Christine, BOSWELL Rod W.

2012　(49)　57-62　2012/08/08
Characterization of a helicon plasma thruster using multipole magnetic field

MIYAMOTO Kazuaki, TAKAHASHI Kazunori, FUJIWARA Tamiya

2012　(49)　63-67　2012/08/08
発散磁場配位下RFプラズマ中の無電流ダブルレイヤー

高橋和貴, Christine Charles, Rod W Boswell

プラズマ核融合学会誌　88　(4)　220-227　2012/05
Publisher: プラズマ核融合学会
25pYE-2 Direct thrust measurement of a permanent magnet helicon source

Itoh Haruna, Takahashi Kazunori, Miyamoto Kazuaki, Fujiwara Tamiya

Meeting abstracts of the Physical Society of Japan　67　(1)　268-268　2012/03/05
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Electron energy distribution of a helicon double layer plasma

TAKAHASHI Kazunori, CHARLES Christine, BOSWELL Rod, FUJIWARA Tamiya

2011　(92)　89-94　2011/12/15
Control of Shunting arc plasma by IGBT modulator and its double probe measurement

MIKAWA Ryota, TAKAHASHI Kazunori, TAKAKI Koichi, YUKIMURA Ken

2011　(72)　21-24　2011/12/15
Spatial modulation of dielectric constant by two dimensional periodic plasma structure

TERUI Toshihiro, TAKAHASHI Kazunori, MIYAMOTO Kazuaki, FUJIWARA Tamiya

2011　(113)　13-17　2011/12/15
High-density plasma production under a magnetic nozzle provided by permanent magnets and direct measurement of a thrust

ITOH Haluna, TAKAHASHI Kazunori, MIYAMOTO Kazuaki, FUJIWARA Tamiya

2011　(92)　37-42　2011/12/15
海外研究生活

高橋和貴

応用物理学会プラズマエレクトロニクス分科会会報　55　41-45　2011/12
Publisher: 応用物理学会プラズマエレクトロニクス分科会
Development of large-diameter permanent-magnets-expanding plasma source containing a double layer

SUZUKI Tatsuya, TAKAHASHI Kazunori, FUJIWARA Tamiya

2011　(37)　31-35　2011/06/03
Production of titanium containing carbon plasma using shunting arc discharge

MIKAWA Ryota, AOKI Hironori, TAKAHASHI Kazunori, TAKAKI Koichi, FUJIWARA Tamiya

2011　(14)　25-29　2011/06/03
Radial characterization of the electron energy distribution in a helicon source terminated by a double layer (vol 15, 074505, 2008)

Kazunori Takahashi, Christine Charles, Rod Boswell, Rikizo Hatakeyama

PHYSICS OF PLASMAS　18　(4)　2011/04

DOI： 10.1063/1.3574353 　

ISSN： 1070-664X
Production of metal contained plasma using shunting arc discharge

AOKI Hironori, TAKAHASHI Kazunori, TAKAKI Koichi, FUJIWARA Tamiya

2010　(128)　11-14　2010/12/16
Double-layer-induced ion acceleration in a radiofrequency plasma expanded by permanent magnets

TAKAHASHI Kazunori, IGARASHI Yuuichi, SHIDA Yutaka, FUJIWARA Tamiya

2009　(22)　13-17　2009/08/06
Production of atmospheric pressure plasma by a self-extinguishing discharge

MATSUMOTO S., SHIDA Y., TAKAHASHI K., MUKAIGAWA S., TAKAKI K., FUJIWARA T.

2009　(11)　7-10　2009/06/13
Computer simulation of neutralization by a corona discharge ionizer

IKEUCHI Toru, TAKAHASHI Kazunori, OKUBO Takahiro, FUJIWARA Tamiya

2008　(76)　103-107　2008/12/19
Basic characteristics of an expanding plasma using permanent magnets

OGUNI Kaoru, TAKAHASHI Kazunori, FUJIWARA Tamiya

2008　(58)　37-41　2008/10/31
21aZH-4 Double-layer formation in an expanding plasma using permanent magnets

Takahashi K., Yamada H., Fujiwara T.

Meeting abstracts of the Physical Society of Japan　63　(2)　162-162　2008/08/25
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
Spatial distribution of charged particles generated by a corona discharge ionizer in nitrogen atmosphere

OKUBO Takahiro, TAKAHASHI Kazunori, IKEUCHI Toru, MUKAIGAWA Seiji, TAKAKI Koichi, FUJIWARA Tamiya

2008　(37)　5-8　2008/07/04
Characteristics and neutralization effect of a corona discharge ionizer in nitrogen gas

MURAKAMI Taichi, OHKUBO Takahiro, TAKAHASHI Kazunori, MUKAIGAWA Seiji, TAKAKI Koichi, FUJIWARA Tamiya, ITO Takeshi, TOYODA Kazuyuki

2007　(80)　47-51　2007/12/22
Excitation Chracteristics of Nonlinear Electromagnetic Waves Due to High Power Plug ECRH

T.Kaneko, K.Takahashi, R.Hatakeyama, T.Saito, Y.Tatematsu, M.Yoshikawa, N.Machida, T.Kaitsuka

Annual Report of National Institute for Fusion Science, April 2006 - March 2007　481　2007
25pQB-8 Effects of the Microwave Modes on ECRH-Indeced Double-Layer Formation

Takahashi K., Kaneko T., Hatakeyama R.

Meeting abstracts of the Physical Society of Japan　61　(2)　162-162　2006/08/18
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28pUC-3 Effect of Ion Flow Energy on Double-Layer Formation due to Localized ECRH

Takahashi K., Kaneko T., Hatakeyama R.

Meeting abstracts of the Physical Society of Japan　61　(1)　216-216　2006/03/04
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
01pC01 Formation of Potential Structure Due to Polarization Reversal of Electromagnetic Waves with Electron Cyclotron Frequency

KANEKO Toshiro, TAKAHASHI Kazunori, HATAKEYAMA Rikizo

(23)　298-298　2006
Publisher: プラズマ・核融合学会
28aB07P Propagation Characteristics of Electron Cyclotron Waves Relating to Double-Layer Formation in Converging Magnetic Fields

TAKAHASHI Kazunori, KANEKO Toshiro, HATAKEYAMA Rikizo, FUKUYAMA Atsushi

(23)　68-68　2006
Publisher: プラズマ・核融合学会
29aB07P Nonlinear Coupling Characteristics between High-Power Electron Cyclotron Wave and Low-Frequency Instability

TAKAHASHI Kazunori, KANEKO Toshiro, HATAKEYAMA Rikizo, SAITO Teruo, TATEMATSU Yoshinori

(23)　137-137　2006
Publisher: プラズマ・核融合学会
22aWG-4 Generation and Control of Ion Flow in Magnetized Plasmas

Takahashi K., Kaneko T., Hatakeyama R.

Meeting abstracts of the Physical Society of Japan　60　(2)　126-126　2005/08/19
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
01pC20P 1-D Analysis of Polarization Reversal of Electron Cyclotron Wave in Inhomogeneously Magnetized Plasmas

TAKAHASHI Kazunori, FUKUYAMA Atsushi, KANEKO Toshiro, HATAKEYAMA Rikizo

(22)　213-213　2005
Publisher: プラズマ・核融合学会
01aB03 Nonlinear Characteristics of Radiated Electromagnetic Waves Due to High-Power ECRH

KANEKO Toshiro, TAKAHASHI Kazunori, SAITO Teruo, NOZAKI Kiyoshi, MACHIDA Norihito

(22)　179-179　2005
Publisher: プラズマ・核融合学会
14pQA-10 Localized Damping Mechanism of Left-Hand Polarized Wave with ECR Frequency in Inhomogeneously Magnetized Plasmas

Takahashi K, Kaneko T, Hatakeyama R

Meeting abstracts of the Physical Society of Japan　59　(2)　177-177　2004/08/25
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
25pA06P Polarization Characteristics of Axisymmetric Electron Cyclotron Wave

TAKAHASHI Kazunori, KANEKO Toshiro, HATAKEYAMA Rikizo

(21)　186-186　2004
Publisher: プラズマ・核融合学会
Effect of Plasma Parameters on the Polarization Reversal of Circularly Polarized Wave in the Region of ECR Frequency

Takahashi K., Kaneko T., Hatakeyama R.

Meeting abstracts of the Physical Society of Japan　58　(1)　249-249　2003/03/06
Publisher: The Physical Society of Japan (JPS)
ISSN： 1342-8349
28aA33P Mechanism of the Polarization Reversal of Left-Hand Polarized Wave with ECR Frequency in Finite-Bounded Plasmas

TAKAHASHI Kazunori, KANEKO Toshiro, HATAKEYAMA Rikizo

(20)　231-231　2003
Publisher: プラズマ・核融合学会
27aC34P Electron Cyclotron Damping of Left-Hand Circularly Polarized Wave Due to Polarization Reversal

TAKAHASHI Kazunori, KANEKO Toshiro, HATAKEYAMA Rikizo

(19)　134-134　2002
Publisher: プラズマ・核融合学会

Show all ︎Show first 5

Presentations 388

RFプラズマを用いたホールスラスタイオン加速に関する実験

高橋和貴, 渡邊裕樹, 中濵友吾, 菊地航大

2024年度宇宙輸送シンポジウム　2025/01/24
40.68MH誘導結合性プラズマ源からの電子引き出し特性

菊地航大, 高橋和貴

第40回プラズマ・核融合学会年会　2024/11/20
デュアルイオンエンジン開発に向けたICPプラズマ中の酸素負イオン生成特性

田村侑真, 高橋和貴

第40回プラズマ・核融合学会年会　2024/11/20
ヘリコンスラスタにおける推進剤ガスシャワー導入法の効果

中濵友吾,高橋和貴

第40回プラズマ・核融合学会年会　2024/11/19
双方向ヘリコンプラズマ噴射による小型スペースデブリ除去への適用の検討

高橋和貴

第41回プラズマ・核融合学会年会　2024/11/19
磁気ノズルによるプラズマ加速を対象とした 3次元粒子計算

喜多内悠斗, 高橋和貴, 鷹尾祥典

第68回宇宙科学技術連合講演会　2024/11/07
Two-dimensional mapping of electron temperature in the PM-cusped helicon plasma thruster International-presentation

Yugo Nakahama, Kazunori Takahashi

The 7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023)　2024/11/04
Bi-directional plasma thruster for small space debris removal International-presentation

Kazunori Takahashi

The 7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP2023)　2024/11/05
Numerical investigations of plasma distributions and their time variation in the expanding magnetic field International-presentation

Yoshinori Takao, Yuto Kitauchi, Kazunori Takahashi

The 77th Annual Gaseous Electronics Conference　2024/10/02
Evaluation of a magnetic nozzle radiofrequency plasma thruster with cusp magnetic field using permanent magnet array International-presentation

Yugo Nakahama, Kazunori Takahashi

The 38th International Electric Propulsion Conference　2024/06/25
Cross-field electron transport in a magnetic nozzle

Kazunori Takahashi, Christine Charles, Rod W Boswell

The 38th International Electric Propulsion Conference　2024/06/24
5-kW class helicon plasma thruster performance

Kazunori Takahashi

The 38th International Electric Propulsion Conference　2024/06/24
Development and Characterization of the ALFVEN Thruster

Yung-An Chan, Kazunori Takahashi, Martin Grabe, Julian Ammer, Christopher Geile

The 38th International Electric Propulsion Conference　2024/06/24
Helicon thruster research and development Invited

Kazunori Takahashi

Second Helicon Plasma Physics and Applications Workshop　2024/04/13
Effect of gas injection pattern on magnetically expanding rf plasma thruster International-presentation

Yugo Nakahama, Kazunori Takahashi

ISPlasma2024/IC-PLANTS2024/APSPT-13　2024/03/04
Electron beam extraction from an inductively coupled radiofrequency plasma source International-presentation

Kodai Kikuchi, Kazunori Takahashi

ISPlasma2024/IC-PLANTS2024/APSPT-13　2024/03/04
Plasma dy namics in a magnetic nozzle radiofrequency plasma thruster International-presentation Invited

Kazunori Takahashi

ISPlasma2024/IC-PLANTS2024/APSPT-13　2024/03/05
水燃料スパッタリング推進機に関する室内実験

清水颯太, 高橋和貴

2023年度宇宙輸送シンポジウム　2024/01/19
カスプ型磁気ノズル高周波スラスタ内部の電子温度分布評価とターゲット計測

中濵友吾, 高橋和貴

2023年度宇宙輸送シンポジウム　2024/01/19
磁気ノズル中の内向き電子離脱を駆動する波動構造計測

高橋和貴, Christine Charles, Rod Boswell

2023年度宇宙輸送シンポジウム　2024/01/19
電子反磁性効果による推力発生の実証

角川颯哉, 高橋和貴

第40回プラズマ・核融合学会年会　2023/11/28
小型電気推進システムの開発~Water-Fueled Sputtering Propulsion~

清水颯太, 高橋和貴

第40回プラズマ・核融合学会年会　2023/11/29
磁気ノズル中のプラズマダイナミクスと宇宙推進 Invited

高橋和貴

第40回プラズマ・核融合学会年会　2023/11/29
Demonstrating a thrust generation by electrons in a magnetic nozzle rf plasma thruster International-presentation

Soya Sumikawa, Kazunori Takahashi

7th Asia-Pacific Conference on Plasma Physics　2023/11/14
Effect of a cusp magnetic field provided by a permanent magnet array on a magnetic nozzle plasma thruster performance International-presentation

Yugo nakahama, Kazunori Takahashi

7th Asia-Pacific Conference on Plasma PHysics　2023/11/15
Operating a magnetron sputtering electric propulsion device with a pulsed gaseous water propellant International-presentation

Sota Shimizu, Kazunori Takahashi

7th Asia-Pacific Conference on Plasma PHysics　2023/11/14
Experimental demonstration of diamagnetism enhanced by energetic electrons in a magnetic nozzle plasma International-presentation

Kazunori Takahashi, Christine Charles, Rod W Boswell

7th Asia-Pacific Conference on Plasma PHysics　2023/11/16
Magnetic nozzle rf plasma thruster: performance improvement and electron detachment International-presentation Invited

Kazunori Takahashi, Christine Charles, Rod W Boswell

7th Asia-Pacific Conference on Plasma PHysics　2023/11/14
永久磁石アレイによるプラズマ損失抑制とヘリコンスラスタの性能改善の検証

中濵友吾, 高橋和貴

日本物理学会第78回年次大会　2023/09/17
磁気ノズル中の高エネルギー電子による反磁性効果の検証

高橋和貴, Christine Charles, Rod W Boswell

日本物理学会第78回年次大会　2023/09
Electron-oriented thrust component in a magnetic nozzle

Soya Sumikawa, Kazunori Takahashi

The second International Fusion and Plasma Conference (iFPC 2023) and the 13th International Conference on Open Magnetic Systems for Plasma Confinement (OS 2023)　2023/08/22
Evaluation of a magnetic nozzle plasma thruster performance with a cusp magnetic field provided by a permanent magnets array

Yugo nakahama, Kazunori Takahashi

The second International Fusion and Plasma Conference (iFPC 2023) and the 13th International Conference on Open Magnetic Systems for Plasma Confinement (OS 2023)　2023/08/22
Performance assesment of a pulsed gaseous water-fueled magnetron sputtering source for a compact electric propulsion device

Sota Shimizu, Kazunori Takahashi

The second International Fusion and Plasma Conference (iFPC 2023) and the 13th International Conference on Open Magnetic Systems for Plasma Confinement (OS 2023)　2023/08/22
Cross-field inward electron transnport in a magnetic nozzle rf plasma thruster

Kazunori Takahashi, Christine Charles, Rod W Boswell

The second International Fusion and Plasma Conference (iFPC 2023) and the 13th International Conference on Open Magnetic Systems for Plasma Confinement (OS 2023)　2023/08/23
Fundamental studies and applications of magnetic nozzle plasma Invited

Kazunori Takahashi

International Conference on Phenomena in Ionized Gases XXXVth edition,　2023/07/13
Features of helicon waves in a non-uniform magnetic field

Felicien Filleul, Antonella Caldarelli, Kazunori Takahashi, Rod Boswell, Christine Charles, Nicholas Rattenbury, John Cater

The 49th European Conference on Plasma Physics　2023/07/07
磁気ノズル中の内向き電子輸送を誘発する波動モードの計測

高橋和貴, Christine Charles, Rod W. Boswell

日本物理学会 2023年春季大会　2023/03/22
Magnetic nozzle radiofrequency plasma thruster Invited

Kazunori Takahashi

The 11th Asia Joint Conference on Propulsion and Power　2023/03/17
Magnetic nozzle rf plasma thruster Invited

Kazunori Takahashi

Deutsches Zentrum für Luft- und Raumfahrt (DLR) workshop on helicon thruster　2023/02/03
磁気ノズルRFプラズマスラスタの性能・物理に関する実験的研究の状況

高橋和貴, Christine Charles, Rod W Boswell

2022年度宇宙輸送シンポジウム　2023/01/13
Plasma Transport in a Magnetic Nozzle and Thruster Development Invited

Kazunori Takahashi

20th International Congress on Plasma Physics　2022/12/01
発散磁場中を膨張する電⼦のポリトロープ指数

高橋和貴, Christine Charles, Rod W Boswell

第39回プラズマ・核融合学会年会　2022/11/24
Magnetic nozzle radiofrequency plasma systems for space and industry Invited

Kazunori Takahashi

The 31st International Toki Conference on Plasma and Fusion Research　2022/11/10
水を燃料に用いたマグネトロンスパッタリングによる推力発生の実証

清水颯太, 高橋和貴

第66回宇宙科学技術連合講演会　2022/11/03
磁気ノズル中のプラズマ密度分布制御と推進性能に与える影響

角川颯哉, 高橋和貴

第66回宇宙科学技術連合講演会　2022/11/04
磁気ノズルヘリコンスラスタの性能改善

高橋和貴

第66回宇宙科学技術連合講演会　2022/11/04
磁気ノズルによるプラズマ膨張におけるエネルギー依存性の数値解析

江本一磨, 高橋和貴, 鷹尾祥典

第66回宇宙科学技術連合講演会　2022/11/04
Measurement of a thrust induced by water-fueled magnetron sputtering source

Sota Shimizu, Kazunori Takahashi

6th Asia Pacific Conference on Plasma Physics　2022/10/09
Effect of energetic tail component on a polytropic index of electrons expanding in a magnetic nozzle

Kosuke Tsukuda, Kazunori Takahashi

6th Asia Pacific Conference on Plasma Physics　2022/10/09
Density profile control of a magnetically expanding plasma and its impact on a plasma thruster

Soya Sumikawa, Kazunori Takahashi

The 75th Annual Gaseous Electronics Conference　2022/10/04
Characterization of a 2 MHz magnetically expanding RF plasma source for thruster development

Thanatith Nakul, Kazunori Takahashi

The 75th Annual Gaseous Electronics Conference　2022/10/07
The Blue Core Paradigm Invited

Rod Boswell, Felicien Filleul, Antonella Caldarelli, Christine Charles, Kazunori Takahashi, Alex Bennet

The 75th Annual Gaseous Electronics Conference　2022/10/03
Radiofrequency plasma thrusters and related studies Invited

Christine Charles, Dimitrios Tsifakis, Rod Boswell, Kazunori Takahashi, Robert Georges, Jessica Benedicto, Eric Rius, Noel Smith, Paul Tesch

The 75th Annual Gaseous Electronics Conference　2022/10/06
Numerical investigation on plasma expansion and particle energy in a magnetic nozzle

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

The 75th Annual Gaseous Electronics Conference　2022/10/07
Assessment of cross-field electron transport in a magnetic nozzle

Kazunori Takahashi, Christine Charles, Rod Boswell

The 75th Annual Gaseous Electronics Conference　2022/10/07
Measurement of a thrust induced by water-fueled magnetron sputtering source

Sota Shimizu, Kazunori Takahashi

The 75th Annual Gaseous Electronics Conference　2022/10/05
磁気ノズル高周波プラズマ推進機における電子内向き輸送の観測

高橋和貴, Christine Charles, Rod Boswell

日本物理学会 2022年秋季大会　2022/09/14
Helicon plasmas, magnetic nozzles Invited

Kazunori Takahashi

Online low temperature plasma seminar　2022/04/19
Experimental investigation on a magnetically-steered radiofrequency plasma thruster

Ryoji Imai, Kazunori Takahashi

33rd International Symposium on Space Technology and Science　2022/03/03
A magnetic nozzle rf plasma thruster - performance improvement and rf system development - International-presentation

Kazunori Takahashi, Ryoji Imai, Kengo Hanaoka

33rd International Symposium on Space Technology and Science　2022/03/03
Magnetic nozzles and plasma plumes Invited

Kazunori Takahashi, Christine Charles, Rod Boswell

ExB Plasma Workshop 2022　2022/02/18
無電極プラズマスラスタのエネルギー損失に関する数値解析

江本一磨, 高橋和貴, 鷹尾祥典

第22回宇宙輸送シンポジウム　2022/01/13
磁気ノズル加速におけるエネルギー輸送の数値解析

江本一磨, 高橋和貴, 鷹尾祥典

第38回プラズマ・核融合学会年会　2021/11/23
Development of a 2 MHz band RF plasma source for large diameter helicon plasma thruster

ナーグルタナーテット, 高橋和貴

第38回プラズマ・核融合学会年会　2021/11/22
磁気ノズル中電子ビーム励起プラズマの熱力学膨張過程

佃耕介, 高橋和貴

第38回プラズマ・核融合学会年会　2021/11/22
磁気ステアリングによるヘリコンスラスタの多方向への推力偏向

今井涼二, 高橋和貴

第38回プラズマ・核融合学会年会　2021/11/22
磁気ノズル中の電子の動的輸送ダイナミクス

高橋和貴

第38回プラズマ・核融合学会年会　2021/11/24
下流シースを除去した磁気ノズルRFプラズマスラスタの数値計算

江本一磨, 高橋和貴, 鷹尾祥典

第65回宇宙科学技術連合講演会　2021/11/11
Fully kinetic simulations of a magnetic nozzle radiofrequency plasma thruster using an open axial boundary condition

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

The 74th Annual Gaseous Electronics Conference　2021/10/08
Measurements of axial and horizontal thrusts in a magnetically steered radiofrequency plasma thruster

Ryoji Imai, Kazunori Takahashi

The 74th Annual Gaseous Electronics Conference　2021/10/08
Recent performance improvement of a magnetic nozzle rf plasma thruster

Kazunori Takahashi

The 74th Annual Gaseous Electronics Conference　2021/10/08
Deflected thrust vector of a magnetically steered radiofrequency plasma thruster

Ryoji Imai, Kazunori Takahashi

5th Asia Pacific Conference on Plasma Physics　2021/09/29
Momentum and energy lost to the wall in a magnetic nozzle plasma thruster and performance improvement Invited

Kazunori Takahashi

5th Asia Pacific Conference on Plasma Physics　2021/09/29
Expansion of a helicon plasma in a magnetic nozzle and space thruster Invited

Kazunori Takahashi

First Helicon Plasma Physics and Applications Workshop　2021/09/24
Development of a 2 MHz band high-power RF plasma source for large diameter helicon plasma thruster

ナーグルタナーテット, 高橋和貴, 安藤晃

2021年度電気関係学会東北支部連合大会　2021/08/27
Electron thermodynamics in a high-density plasma interacting with a magnetic nozzle

佃耕介, 高橋和貴, 安藤晃

2021年度電気関係学会東北支部連合大会　2021/08/27
Investigation of Momentum Flux Lost to a Lateral Wall in an Electrodeless RF Plasma Thruster

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

AIAA Propulsion and Energy 2021 Forum　2021/08
開放境界条件を用いた磁気ノズル加速のPIC-MCC計算

江本一磨, 高橋和貴, 鷹尾祥典

STEシミュレーション研究会・KDKシンポジウム合同研究会　2021/03/30
境界における非局所性及び動的液体金属-プラズマ接触実験

高橋和貴

日本物理学会第76回年会　2021/03/12
Numerical Investigation of Energy Loss in a Magnetic Nozzle Thruster

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

The 10th Asian Joint Conference on Propulsion and Power　2021/03
磁気ノズル中の電子エネルギー分布関数：等温-断熱膨張の変化

高橋和貴, Christine Charles, Rod W Boswell

2020年度宇宙輸送シンポジウム　2021/01/14
磁気ステアリングを用いたヘリコンスラスタの推力ベクトル制御

今井涼二, 高橋和貴, 安藤晃

2020年度宇宙輸送シンポジウム　2021/01/14
磁気ノズル加速における電磁気力と運動量増分の数値解析

江本一磨, 高橋和貴, 鷹尾祥典

2020年度宇宙輸送シンポジウム　2021/01/14
磁気ステアリングによるヘリコンスラスタの推力ベクトル制御の検証

今井涼二, 高橋和貴

第37回プラズマ・核融合学会年会　2020/12/01
磁気ノズルプラズマスラスタにおけるエネルギー輸送の数値解析

江本一磨, 高橋和貴, 鷹尾祥典

第37回プラズマ・核融合学会年会　2020/12/01
ヘリコン波プラズマを用いた宇宙工学と地上産業応用

高橋和貴

第37回プラズマ・核融合学会年会　2020/12/01
自動周波数制御型RF システムとエッチング装置開発

花岡健吾, 高橋和貴, 山田康平, 山本直子, 薮田勇気, 孫宇, 片橋龍一, 亀井龍一郎, 大滝英司, 田中信明, 原史朗

ファブシステム研究会令和二年臨時総会　2020/11/06
Direct measurement of a thrust induced by sputtered materials in magnetron-type plasma sources

Hidemasa Miura, Kazunori Takahashi, And Akiro

4th Asia-Pacific Conference on Plasma Physics　2020/10/27
Testing a scallop free vertical silicon etching by using a fast- and automatically- controlled RF plasma source

Kengo Hanaoka, Kazunori Takahashi, And Akiro

4th Asia-Pacific Conference on Plasma Physics　2020/10/27
Thermodynamics of electrons expanding in a magnetic nozzle Invited

Kazunori Takahashi

4th Asia Pacific Conference on Plasma Physics　2020/10/26
ヘリコンスラスタ開発と自動制御高周波システム

高橋和貴, 花岡健吾, 今井涼二

第64回宇宙科学連合大会　2020/10/27
磁気ノズルプラズマスラスタの粒子計算による反磁性ドリフト電流分布の評価

江本一磨, 高橋和貴, 鷹尾祥典

第64回宇宙科学連合大会　2020/10/27
Investigaion of the electromagnetic force and momentum gain in a magnetic nozzle plasma thruster

Kazuma Emoto, Kazunori Takahashi, Yoshinori Takao

The 73rd Annual Gaseous Electronics Conference　2020/10/08
Plasma expansion in a magnetic nozzle thruster Invited

Kazunori Takahashi

The 73rd Annual Gaseous Electronics Conference　2020/10/07
Development and applications of frequency-tuning helicon plasma source

Kazunori TAKAHASHI, Kengo HANAOKA, Akira ANDO

2019/11/29
金属スパッタリングによる放出運動量計測と小型電気推進応用

三浦英将, 高橋和貴

第36回プラズマ・核融合学会年会　2019/11/29
磁気ノズルRFプラズマスラスタ開発の現状 Invited

高橋和貴

第５回宇宙太陽発電(SSPS)シンポジウム　2019/11/22
Axial and radial momentum fluxes lost to a radial wall of a helicon plasma thruster

Takeharu Sugawara, Kazunori Takahashi, Akira Ando

3rd Asia-Pacific Conference on Plasma Physics　2019/11/05
Many aspects of plasma expansion physics in the magnetic nozzle and space applications Invited

Kazunori Takahashi

3rd Asia-Pacific Conference on Plasma Physics　2019/11/07
Development of a compact helicon plasma source for Minimal tools ~ Sputtering, Etching ~ Invited

Kazunori Takahashi

2019/10/04
Performance improvement of a magnetic nozzle plasma thruster International-presentation

Kazunori Takahashi, Yoshinori Takao, Akira Ando

36th International Electric Propulsion Conference　2019/09
Laboratory demonstration of a bidirectional helicon plasma thruster for space debris removal International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell, Akira Ando

36th International Electric Propulsion Conference　2019/09
Direct measurement of thrust induced by sputtered materials for a compact electric propulsion device

三浦英将, 高橋和貴, 安藤晃

2019年度電気関係学会東北支部連合大会　2019/08
The pulse-controlled helicon plasma source for the silicon etching

花岡健吾, 高橋和貴, 安藤晃

2019年度電気関係学会東北支部連合大会　2019/08
Development of automatically-controlled compact rf plasma source and its application International-presentation Invited

Kazunori Takahashi

KAIST Workshop on the next generation RF plasma sources　2019/07
Minimal multi-target helicon sputtering tool International-presentation

Kazunori Takahashi, Taichi Saito, Akira Ando, Shiro Hara

15th International Symposium on Sputtering & Plasma Processes　2019/06
高速自動マッチングが可能な小型ＲＦ電源とミニマルMEMSエッチャー開発

花岡健吾, 高橋和貴, 安藤晃, 山田康平, 田中信明, 大滝英司, 原史朗

ファブシステム研究会平成31年度定期総会　2019/04
Negative beam oscillation of RF source at Tohoku University International-presentation

Kazunori Takahashi

Meeting on collaborations between IPP Garhing and NIFS on the negative ion beam source　2019/03
ヘリコンスラスタからの双方向プラズマ運動量放出とスペースデブリ除去

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

日本物理学会第74回年次大会　2019/03
ヘリコンスラスタ内壁への局所運動量損失ベクトルの分布評価

菅原丈晴, 高橋和貴, 鷹尾祥典, 安藤晃

日本物理学会第74回年次大会　2019/03
小型高周波プラズマ源を用いた実用化装置開発

TAKAHASHI Kazunori

プラズマ流の基礎と応用に関する研究会　2019/02
Development of a compact, frequency-tuned, and pulsed helicon plasma source for silicon etching International-presentation

Kengo Hanaoka, Kazunori Takahashi, Akira Ando, Shiro Hara

15th International Symposium on Sputtering & Plasma Processes　2019
ヘリコン波プラズマ技術を用いたミニマルファブ用超高速マルチスパッタ装置の開発 Invited

TAKAHASHI Kazunori

ミニマル3DICファブ開発研究会第76回コア開発会議　2019/01
Development of a Minimal multi-target helicon sputtering tool International-presentation

Kazunori Takahashi

International Symposium on Semiconductor Manufacturing　2018/12
Inhibition of substrate heating in a Minimal Multi-Target Helicon sputtering tool International-presentation

Taichi Saito, Kazunori Takahashi, Akira Ando, Shiro Hara

International Symposium on Semiconductor Manufacturing　2018/12
イオンビーム源へのRF電位振動重畳実験

今義毅, 高橋和貴, 木﨑雅志, 中野治久, 永岡賢一, 津守克嘉, 安藤晃

2018年度負イオン研究会　2018/12
磁気ノズルRFプラズマ中の物理現象と宇宙応用 Invited

TAKAHASHI Kazunori

プラズマ・核融合学会九州山口支部大会　2018/12
ミニマル・マルチターゲット・ヘリコンスパッタ装置 Invited

TAKAHASHI Kazunori

SEMICON JAPAN2018 ミニマルファブ講演会　2018/12
Vector-resolved measurement of a local plasma momentum in a helicon plasma thruster International-presentation

Takeharu Sugawara, Kazunori Takahashi, Yoshinori Takao, Akira Ando

2nd Asia-Pasific Conference on Plasma Physics　2018/11
Enhanced plasma density downstream of an rf plasma source by enlarging an open source exit International-presentation

Taichi Saito, Kazunori Takahashi, Akira Ando

2nd Asia-Pasific Conference on Plasma Physics　2018/11
Adiabatic expansion of electrons in a magnetic nozzle International-presentation

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

2nd Asia-Pasific Conference on Plasma Physics　2018/11
Investigation of neutral depletion and propulsion performance in electrodeless RF plasma thrusters

Yoshinori Takao, Kazuki Takase, Sora Yoshikawa, Kazunori Takahashi

71st Annual Gaseous Electronics Conference　2018/11
Laboratory experiments on a plasma-flow-state transition from diverging to stretching a magnetic nozzle International-presentation

Kazunori Takahashi, Akira Ando

71st Annual Gaseous Electronics Conference　2018/11
Adiabatic expansion of electron gas interacting with a magnetic nozzle International-presentation

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

71st Annual Gaseous Electronics Conference　2018/11
ヘリコンスラスタ中のエネルギー分布関数と推力計測 Invited

TAKAHASHI Kazunori

電気推進夏の学校　2018/10
ヘリコンスラスタ中のプラズマ物理現象とＲＦシステム開発

高橋和貴, Christine Charles, Rod Boswell, 鷹尾祥典, 菅原丈晴, 斎藤太地, 高瀬一樹, 安藤晃

第62回宇宙科学技術連合講演会　2018/10
ヘリコンスラスタ中の局所プラズマ運動量ベクトル計測法の開発

菅原丈晴, 高橋和貴, 鷹尾祥典, 安藤晃

第62回宇宙科学技術連合講演会　2018/10
弱磁場ヘリコンプラズマを用いたマルチスパッタ装置

齋藤太地, 高橋和貴, 安藤晃, 遠藤伸吾, 原谷和徳, 千葉隼人, 青木貴博, 横山紀夫, 川崎弘幸, 薮田勇気, 水口寿史, 佐藤仁紀, 酒井康憲, 孫宇, 亀井龍一郎, 原史朗

ファブシステム研究会平成30年度臨時総会　2018/10
高周波電場を重畳した直流方式イオン源からのビームの特性

今義毅, 高橋和貴, 木﨑雅志, 中野治久, 永岡賢一, 津守克嘉, 安藤晃

日本物理学会2018年秋季大会　2018/09
磁気ノズル中電子の断熱膨張過程の観測

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

日本物理学会 2018年秋季大会　2018/09
Development of a momentum vector measurement instrument in a helicon plasma thruster

菅原丈晴, 高橋和貴, 鷹尾祥典, 安藤晃

平成30年度電気関係学会東北支部連合大会　2018/09
Standing helicon induced by a rapidly bent magnetic field in plasmas International-presentation

Kazunori Takahashi, Sho Takayama, Akira Ado

Japan-Germany Workshop on Negative Ion Source　2018/06
弱磁場ヘリコンプラズマを用いたマルチスパッタ装置

齋藤太地, 高橋和貴, 安藤晃, 遠藤伸吾, 原谷和徳, 千葉隼人, 青木貴博, 横山紀夫, 川崎弘幸, 薮田勇気, 水口寿史, 佐藤仁紀, 酒井康憲, 孫宇, 亀井龍一郎, 原史朗

ファブシステム研究会平成30年度定期総会　2018/04
境界・遷移条件が関与する磁気ノズルプラズマ流ダイナミクス

髙橋和貴

日本物理学会第73回年次大会　2018/03
ヘリコンプラズマを用いたスペースデブリ除去の室内実験

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

H29年度宇宙輸送シンポジウム　2018/01
プラズマ流による磁気ノズル発散・伸長の室内実験

高橋和貴, 安藤晃

Plasma Conference 2017　2017/11/20
Effect of a magnetic Laval nozzle to the thrust performance on an MPD thruster

Hiroaki Nabuchi, Kiyotaka Suzuki, Yohei Kobayashi, Atsushi Komuro, Kazunori Takahashi, Akira Ando

25th International TOKI Conference (ITC-25)　2017/11/03
Characteristics of a large diameter RF negative ion source

Yuko Sasaki, Sho Takayama, Haruhisa Nakano, Atsushi Komuro, Kazunori Takahashi, Akira Ando

25th International TOKI Conference (ITC-25)　2017/11/03
外部磁場制御を用いたミニマルヘリコンスパッタ装置の開発

Taichi Saito, Kazunori Takahashi, Akira Ando, Shiro Hara

Plasma Conference 2017　2017/11
Improvement of Propulsion Performance by Gas Injection and External Magnetic Field in Electrodeless Plasma Thrusters International-presentation

Kazuki Takase, Kazunori Takahashi, Yoshinori Takao

35th International Electric Propulsion Conference　2017/10
Laboratory demonstration of space debris removal by a bi-directional helicon plasma thruster International-presentation

Kazunori Takahashi, Christine Charles, Rod W Boswell, Akira Ando

International Astronautical Congress 2017　2017/09/25
The mini-helicon plasma thruster for ‘CubeSat’ nano-satellites: experiments and simulations International-presentation

Alex Bennet, Kazunori Takahashi, Christine Charles, Andrew Bish, Rod Boswell, Robert Georges, Abdessamad Benidar

68th International Astronautical Congress 2017　2017/09
Revisiting the thermodynamics of collisionless plasma expansion in solar magnetic funnels International-presentation

Rod Boswell, Y. Zhang, C. Charles, K. Takahashi

68th International Astronautical Congress 2017　2017/09
Localized electron heating and cooling in a magnetic-filtered standing helicon source International-presentation

Kazunori Takahashi

IUMRS-ICAM 2017 (The 15th International Conference on Advanced Materials)　2017/08/27
ヘリコンスラスタ中の高密度プラズマ生成に伴う軸方向運動量損失

高橋和貴, 鷹尾祥典, 安藤晃

日本物理学会第72回年次大会　2017/03/17
発散磁場配下ヘリコンプラズマ中の高温電子発生特性

赤星晃, 高橋和貴, 小室淳史, 安藤晃

日本物理学会第72回年次大会　2017/03/17
Plasma dynamics and momentum conversion in magnetic nozzle plasma thruster International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell, Trevor Lafleur, Amnon Fruchtman, Yoshinori Takao, Akira Ando

13th Asia Pacific Physics Conference　2016/12/04
Approaching the Theoretical Limit of Diamagnetic-Induced Momentum in a Rapidly Diverging Magnetic Nozzle, PRL 110 (2013) 195003 International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell

13th Asia Pacific Physics Conference　2016/12/04
磁気ノズルヘリコンプラズマ中の高温電子発生・輸送特性

赤星晃, 高橋和貴, 小室淳史, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
磁気フィルタに起因する定在波ヘリコン励起と電子加熱

高橋和貴, 高山頌, 小室祥典, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
ヘリコンMPDスラスタにおける中性粒子枯渇に伴う超音速プラズマ流誘起と制御

橋詰太一郎, 高橋和貴, 小室淳史, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
高周波負イオンビーム源開発へ向けたフィラメント放電中RFシース生成・制御実験

増澤慶汰, 佐々木佑晃, 高橋和貴, 中野治久, 永岡賢一, 小室淳史, 安藤晃, 津守克嘉

プラズマ核融合学会第33回年会　2016/11/29
大口径高周波水素負イオン源におけるプラズマ生成評価

佐々木佑晃, 増澤慶汰, 小室淳史, 高橋和貴, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
ラバール型磁気ノズル印加型MPDスラスタにおける放電電流分布計測とプラズマ加速への効果

名渕弘晃, 千葉大幹, 小室淳史, 高橋和貴, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
小型ヘリコンプラズマ源を用いた高速反応性シリコンエッチング

仲野雄大, 高橋和貴, 小室淳史, 安藤晃

プラズマ核融合学会第33回年会　2016/11/29
Standing helicon induced by a rapidly bent magnetic field in plasmas International-presentation

Kazunori Takahashi, Sho Takayama, Atsushi Komuro, Akira Ando

69th Annual Gaseous Electronics Conference　2016/10/10
Effect of plasma distribution on propulsion performance in electrodeless plasma thrusters International-presentation

Yoshinori Takao, Kazuki Takase, Kazunori Takahashi

69th Annual Gaseous Electronics Conference　2016/10/10
Neutral-depletion-induced asymmetric plasma density profile and momentum transport in a helicon thruster International-presentation

Kazunori Takahashi, Yoshinori Takao, Aiki Chiba, Akira Ando

69th Annual Gaseous Electronics Conference　2016/10/10
Non-locality, adiabaticity, thermodynamics and electron energy probability functions International-presentation

Roderick Boswell, Yunchao Zhang, Christine Charles, Kazunori Takahashi

69th Annual Gaseous Electronics Conference　2016/10/10
高周波水素負イオン源中の磁気フィルタによる定在波ヘリコン励起と電子加熱・冷却

高橋和貴, 高山頌, 小室淳史, 安藤晃

日本物理学会 2016年秋季大会　2016/09/13
ヘリコンMPDスラスタにおける中性粒子枯渇に伴う超音速プラズマ流誘起

橋詰太一郎, 高橋和貴, 小室淳史, 安藤晃

日本物理学会 2016年秋季大会　2016/09/13
Neutral depletion effect on a helicon thurster performance International-presentation

Kazunori Takahashi, Yoshinori Takao, Akira Ando

18th International Congress on Plasma Physics　2016/06/27
Plasma momentum imparted by a magnetic nozzle helicon plasma International-presentation

Kazunori Takahashi

18th International Congress on Plasma Physics　2016/06/27
Generation of a long-pulsed, high density, and supersonic plasma flow in a helicon magnetoplasmadynamic thruster International-presentation

Taichiro Hashizume, Kazunori Takahashi, Atsushi Komuro, Akira Ando

18th International Congress on Plasma Physics　2016/06/27
変形磁場の導入による定在波ヘリコンの励起

高橋和貴, 高山頌, 小室淳史, 安藤晃

電気学会プラズマ研究会　2016/05/26
ヘリコンMPDプラズマスラスタの大電力化による超音速プラズマ流の生成と特性

橋詰太一郎, 高橋和貴, 小室淳史, 安藤晃

日本物理学会第71回年次大会　2016/03/19
強磁場印可ヘリコンプラズマスラスタの磁気ノズルプラズマ流特性と推力発生

高橋和貴, Amnon Fruchtman, Christine Charles, Rod Boswell, 小室淳史, 安藤晃

日本物理学会第71回年次大会　2016/03/19
ラバール型磁気ノズル印加型MPD推進機の推進性能に対する推進剤ガス種の効果

名渕弘晃, 小林洋平, 千葉大幹, 小室淳史, 高橋和貴, 安藤晃

日本物理学会第71回年次大会　2016/03/19
大口径高周波水素負イオン源における負イオン生成とセシウム添加効果

佐々木佑晃, 高山頌, 増澤慶汰, 小室淳史, 高橋和貴, 安藤晃

日本物理学会第71回年次大会　2016/03/19
収束磁場ヘリコンプラズマ源を用いた高速シリコンエッチャー開発

仲野雄大, 高橋和貴, 小室淳史, 安藤晃

平成28年電気学会全国大会　2016/03/16
収束磁場ヘリコンプラズマ源を用いた高速シリコンエッチャー開発

仲野雄大, 高橋和貴, 小室淳史, 安藤晃

平成28年度電気学会全国大会　2016/03/16
実験室プラズマによる宇宙プラズマ現象模擬実験について－LAPD装置のコーラス現象と高β超音速プラズマの可能性－

高橋和貴

実験室・宇宙プラズマ研究会「乱流・輸送・粒子加速」　2016/03/08
磁気ノズルプラズマ流における運動量変換過程と磁場の変形現象

高橋和貴

平成27年度宇宙科学に関する室内実験シンポジウム　2016/02/23
ヘリコンMPDスラスタのロングパルス化による安定作動と推力測定

橋詰太一郎, 高橋和貴, 小室淳史, 安藤晃

平成27年度宇宙輸送シンポジウム　2016/01/14
ヘリコンスラスタ推進性能への中性粒子枯渇の影響と改善

高橋和貴, 千葉愛貴, 鷹尾祥典, 安藤晃

平成27年度宇宙輸送シンポジウム　2016/01/14
ヘリコンスラスタの推進機構

高橋和貴

プラズマ・核融合学会第32回年回　2015/11/24
磁気ノズルヘリコンスラスタの運動量輸送・変換過程へのガス種の効果

千葉愛貴, 高橋和貴, 小室淳史, 安藤晃

プラズマ・核融合学会第32回年回　2015/11/24
高周波水素負イオン源における電子エネルギー分布計測と駆動周波数の効果

高山頌, 佐々木佑晃, 小室淳史, 高橋和貴, 安藤晃

プラズマ・核融合学会第32回年回　2015/11/24
Direct identification of axial plasma momentum in a magnetic nozzle helicon plasma International-presentation

Kazunori Takahashi, Aiki Chiba, Atsushi Komuro, d Akira

57th Annual Meeting of the APS Division of Plasma Physics　2015/11/16
Magnetic nozzle helicon plasma thruster International-presentation

Kazunori Takahashi

PLASAS-7　2015/11/06
Plasma discharge characteristics in compact SF6 radio-frequency plasma source for plasma etching application International-presentation

The 68th Annual Gaseous Electronics Conference　2015/10/12
磁気ノズルヘリコンプラズマスラスタ中の周方向電流評価

千葉愛貴, 高橋和貴, 小室淳史, 安藤晃

日本物理学会 2015年秋季大会　2015/09/16
ヘリコンプラズマスラスターにおける中性粒子枯渇現象とプラズマ分布の時空間発展

高橋和貴, 小室淳史, 安藤晃

日本物理学会 2015年秋季大会　2015/09/16
Effect of propellant species on thrust imparted by a helicon plasma thruster International-presentation

Aiki Chiba, Kazunori Takahashi, Atsushi Komuro, Akira Ando

34th International Electric Propulsion Conference　2015/07/04
Non-Local Electron Energy Probability Function in a Plasma Expanding along a Magnetic Nozzle International-presentation

Rod Boswell, Kazunori Takahashi, Christine Charles, Igor Kaganovich

34th International Electric Propulsion Conference　2015/07/04
Recent Progress of a Helicon Plasma Thruster Development International-presentation

Kazunori Takahashi, Atsushi Komuro, Akira Ando

34th International Electric Propulsion Conference　2015/07/04
Helicon Magnetoplasmadynamic Plasma Thruster for Large Thrust and High Specific Impulse Electric Propulsion International-presentation

Kazunori Takahashi, Atsushi Komuro, Akira Ando

34th International Electric Propulsion Conference　2015/07/04
マッチャ―レスミニマルエッチング装置の開発

ミニマルファブシステム総会　2015/04/16
ヘリコンMPDスラスタによる低気圧高密度プラズマの生成と特性

高橋和貴, 小室淳史, 安藤晃

日本物理学会第70回年次大会　2015/03/21
ヘリコンプラズマ生成部における運動量損失とイオン質量の効果

千葉愛貴, 高橋和貴, 小室淳史, 安藤晃

日本物理学会第70回年次大会　2015/03/21
無電極磁気ノズルヘリコンプラズマスラスター

高橋和貴

第18回若手科学者によるプラズマ研究会　2015/03/04
ヘリコンプラズマスラスター推進性能の推進剤ガス種依存性

千葉愛貴, 高橋和貴, 小室淳史, 安藤晃

Plasma Conference 2014　2014/11/19
高周波水素負イオン源におけるプラズマ基礎特性の周波数依存性

高山頌, 小水内翔太, 小室淳史, 高橋和貴, 安藤晃

Plasma Conference 2014　2014/11/18
磁気ノズルヘリコンプラズマ中の粒子挙動と無電極電気推進機の開発

高橋和貴

Plasma Conference 2014　2014/11/18
Magnetic nozzle plasma thruster for space travel: middle power helicon and high power helicon mpd thrusters International-presentation

Kazunori Takahashi

PLASAS-6　2014/10/18
磁気ノズルヘリコンMPD放電による低気圧高密度プラズマ流の生成

高橋和貴, 安藤晃

第10回核融合エネルギー連合講演会　2014/06/19
高周波負イオン源のプラズマ駆動周波数の効果

髙山頌, 小水内翔太, 小室淳史, 高橋和貴, 安藤晃

第10回核融合エネルギー連合講演会　2014/06/19
Electron/Ion energy distribution function in the rf driven plasmas International-presentation

Kazunori Takaahshi

Korea-Japan collaborative workshop on negative ion beam at Korean Atomic Energy Research Institute　2014/05/13
ヘリコンプラズマスラスタの推進性能に対する動作ガス種の効果

千葉愛貴, 高橋和貴, 安藤晃

電気学会プラズマ研究会　2014/05/09
大電力磁気ノズルプラズマスラスタへ向けたヘリコンおよびヘリコンMPDスラスタの開発状況

高橋和貴, 千葉愛貴, 安藤晃

電気学会プラズマ研究会　2014/05/09
磁気ノズル中のプラズマ流運動量の直接計測と電気推進機の開発

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

日本地球惑星科学連合連合大会 2014年大会　2014/04/28
有磁場型・高周波高密度プラズマ生成制御のミニマル応用

高橋和貴

ミニマルプラズマ講演会　2014/04/22
理想磁気ノズルヘリコンスラスタの推力計測へ向けた強磁場ヘリコンプラズマ生成

高橋和貴, 佐藤大樹, 高木浩一, 安藤晃

日本物理学会第69回年次大会　2014/03/27
MPD推進におけるラバール磁場重畳効果

鈴木清孝, 伊澤裕紀, 小林洋平, 星野優介, 高橋和貴, 安藤晃

日本物理学会第69回年次大会　2014/03/27
A high power FET-based radiofrequency plasma source for a negative hydrogen ion source International-presentation

Shota Komizunai, Kohei Oikawa, Yuta Saito, Kazunori Takahashi, Akira Ando

9th International Conference on Reactive Plasmas and 31st Symposium on Plasma Processing　2014/02/03
Easy and quick measurements of electron temperature and plasma density by a sheath compensated Langmuir probe International-presentation

Kazunori Takahashi, Hiroki Higashiyama, Koichi Takaki, Akira Ando

9th International Conference on Reactive Plasmas and 31st Symposium on Plasma Processing　2014/02/03
Temporal- and spatial ion distribution of carbon shunting arc International-presentation

Koichi Takaki, Takumi Konishi, Ryota Mikawa, Kazunori Takahashi, Ken Yukimura

9th International Conference on Reactive Plasmas and 31st Symposium on Plasma Processing　2014/02/03
Gas-liquid plasma discharge in bubbled water and application to sterilization International-presentation

Ryosuke Ohno, Guanyang Tang, Kazunori Takahashi, Akira Ando

9th International Conference on Reactive Plasmas and 31st Symposium on Plasma Processing　2014/02/03
Direct measurement of thrust components arising from physical boundaries and a magnetic nozzle in a helicon plasma thruster International-presentation

Kazunori Takahashi

9th International Conference on Reactive Plasmas and 31st Symposium on Plasma Processing　2014/02/03
ラバール型磁気ノズル重畳によるMPD推力増加

鈴木清孝, 伊澤裕紀, 小林洋平, 高橋和貴, 安藤晃

平成25年度宇宙輸送シンポジウム　2014/01/16
無電極磁気ノズルヘリコンスラスター

高橋和貴, Christine Charles, Rod Boswell, 千葉愛貴, 安藤晃

平成25年度宇宙輸送シンポジウム　2014/01/16
小型VASIMR推進に向けた無電極プラズマ装置の開発

星野優介, 伊澤裕紀, 鈴木清孝, 松浦宏太, 高橋和貴, 安藤晃

平成25年度宇宙輸送シンポジウム　2014/01/16
静電プローブによるプラズマ計測とエネルギー分布関数

高橋和貴

平成25年度宇宙輸送シンポジウム　2014/01/16
IGBTを用いた強磁場発生とヘリコンソースへの適用

高橋和貴, 佐藤大樹, 高木浩一, 安藤晃

第27回プラズマ推進プロジェクト研究会　2013/12/13
磁気ノズル中径方向拡散の抑制によるヘリコンスラスターの性能向上

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

プラズマ・核融合学会第30回年回　2013/12/03
FET 高周波水素負イオン源の負イオン生成評価と大型化

斉藤雄太, 及川幸平, 小水内翔太, 高橋和貴, 安藤晃

プラズマ・核融合学会第30回年回　2013/12/03
マイクロ波を利用したプラズマ合成シリカ微粒子の生成制御

八島一哉, 唐観揚, 高橋和貴, 安藤晃, 小駒益弘, 竹田篤

プラズマ・核融合学会第30回年回　2013/12/03
一次元プラズマ周期構造形成によるマイクロ波バンドギャップ形成

高橋和貴, 安藤晃

電気学会プラズマ研究会　2013/11/21
無電極プラズマスラスター

第29回九州・山口プラズマ研究会　2013/11/02
Helicon plasma thruster experiments controlling cross-field diffusion under a magnetic nozzle International-presentation

K. Takahashi, C. Charles, R.W. Boswell, A. Ando

The 33rd International Electric Propulsion Conference　2013/10/06
Ehancement of thrust performance of a MPD thruster with a magnetic nozzle International-presentation

A. Ando, K. Takahashi, Y. Izawa, K. Suzuki, Y. Hoshano

The 33rd International Electric Propulsion Conference　2013/10/06
磁気ノズル型ヘリコンプラズマスラスターの推力成分の分解計測

高橋和貴, Christine Charles,Rod, W Boswell, 安藤晃

日本物理学会2013年秋季大会　2013/09/25
MPD推進における外部磁場形状効果

安藤晃, 伊澤裕紀, 鈴木清孝, 星野優介, 高橋和貴

日本物理学会2013年秋季大会　2013/09/25
Large diameter permanent-magnets-expanded plasma source for spontaneous generation of low-energy ion beam International-presentation

Kazunori Takahashi, Tatsuya Suzuki, Akira Ando

The 15th International Conference on Ion Sources (ICIS'13)　2013/09/09
High density plasma production in a RF negative hydrogen ion source with axial magnetic field generated by a permanent magnet array International-presentation

Kohei Oikawa, Yuta Saito, Shota Komizunai, Kazunori Takahashi, Akira Ando

The 15th International Conference on Ion Sources (ICIS'13)　2013/09/09
Helicon plasma production and H- beam extraction from a FET based RF negative hydrogen ion source International-presentation

Akira Ando, Kohei Oikawa, Yuta Saito, Shota Komizunai, Kazunori Takahashi, Nozomi Tanaka

The 15th International Conference on Ion Sources (ICIS'13)　2013/09/09
磁気ノズルヘリコンプラズマスラスターの開発

高橋和貴

2013年度第52回プラズマ若手夏の学校　2013/09/02
Effect of magnetic Laval nozzle on a MPD Thruster

鈴木清孝, 星野優介, 伊澤裕紀, 高橋和貴, 安藤晃

平成25年度電気関係学会東北支部連合大会　2013/08/22
Production and measurement of negative hydrogen ions in a FET-based RF ion source

小水内翔太, 及川幸平, 斎藤雄太, 高橋和貴, 安藤晃

平成25年度電気関係学会東北支部連合大会　2013/08/22
Production of hydroxyl radical by a pulsed discharge in a gas-liquid hybrid type discharge reactor

大野良輔, 唐観揚, 八島一哉, 高橋和貴, 安藤晃

平成25年度電気関係学会東北支部連合大会　2013/08/22
Radio frequency (RF) plasma production for the development of a RF electric plasma thruster

星野優介, 鈴木清孝, 伊澤裕紀, 高橋和貴, 安藤晃

平成25年度電気関係学会東北支部連合大会　2013/08/22
Magnetic nozzle modification by an expanding helicon plasma

東山弘樹, 高橋和貴, 高木浩一, 安藤晃

平成25年度電気関係学会東北支部連合大会　2013/08/22
無電極ヘリコンプラズマスラスターの推力計測

高橋和貴

プラズマ科学のフロンティア2013研究会　2013/08/21
Current-free plasma thruster controlling cross-field diffusion under a magnetic nozzle International-presentation

K. Takahashi, C. Charles, R.W. Boswell, A. Ando

The 12th Asia Pacific Physics Conference　2013/07/14
Effect of a magnetic nozzle in an MPD Thruster International-presentation

Y. Izawa, K. Suzuki, Y. Hoshano, K. Takahashi, A. Ando

The 12th Asia Pacific Physics Conference　2013/07/14
Experimental investigation of a gas-liquid plasma discharge and its application to water purification International-presentation

G. Tang, T.Togashi, K. Yashima, R. Ohno, K.Takahashi, A. Ando

The 12th Asia Pacific Physics Conference　2013/07/14
Thrust Imparted from a Magnetic Nozzle Helicon Plasma Thruster International-presentation

Kazunori Takahashi

5th International Workshop on Plasma Scientech for all something (PLASAS-5)　2013/06/21
Experimental Identification of Thrust Components Imparted by an Electrodeless Helicon Plasma Thruster International-presentation

Kazunori Takahashi, Christine Charles, Rod W Boswell

The 29th International Symposium on Space Technology and Science　2013/06/02
Design of a Permanent Magnet Compact Helicon Plasma Source with a Strongly Divergent Magnetic Nozzle International-presentation

Kazuaki Miyamoto, Kazunori Takahashi, Koichi Takaki, Tamiya Fujiwara

The 29th International Symposium on Space Technology and Science　2013/06/02
Experimental Approach to an Ideal Magnetic Nozzle Using a Compact Solenoid in a Helicon Thruster International-presentation

Daiki Sato, Kazunori Takahashi, Koichi Takaki, Tamiya Fujiwara

The 29th International Symposium on Space Technology and Science　2013/06/02
ヘリコンスラスター推力成分の分解計測と磁気ノズル成分に対する径方向損失の影響

高橋和貴, Christine Charles, Rod Boswell, 安藤晃

プラズマ推進プロジェクト研究会　2013/05/15
プラズマ中無電極静電イオン加速の制御と長寿命イオンエンジンへの先進応用

高橋和貴

東電記念財団研究成果報告会　2013/04/12
ヘリコンプラズマスラスターの推力発生機構と磁気ノズル効果

高橋和貴, Christine Charles, Rod Boswell

日本物理学会第68回年次大会　2013/03/26
ヘリコンプラズマによる磁気ノズル変形現象の検討

東山弘樹, 鈴木達也, 高橋和貴, 藤原民也, 高木浩一

電気学会プラズマ研究会　2013/03/14
磁気ノズル型ヘリコンプラズマ流のモーメント計測

高橋和貴

電気通信研究所共同プロジェクトプラズマ流の基礎と応用に関する研究会　2013/03/07
小型ソレノイドによるノズル型強磁場発生とヘリコンスラスターへの応用

佐藤大樹, 高橋和貴, 高木浩一, 藤原民也

電気学会プラズマパルスパワー合同研究会　2012/12/11
磁気ノズル効果によるヘリコンプラズマスラスターの性能向上

高橋和貴, Christine Charles, Rod Boswell

プラズマ核融合学会大２９回年回　2012/11/27
高密度ヘリコンプラズマによる外部印加磁気ノズルの変形の検討

鈴木達也, 高橋和貴

プラズマ核融合学会大２９回年回　2012/11/27
Electron diamagnetic effect in a magnetic nozzle on a helicon plasma thruster performance International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell

65th Annual Gaseous Electronics Conference　2012/10/22
Performance characterization of a permanent-magnet helicon plasma thruster International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell

65th Annual Gaseous Electronics Conference　2012/10/22
Direct Measurement of Thrust Imparted from a Helicon Plasma Thruster and its Physics International-presentation Invited

Kazunori Takahashi

Workshop in Ad Astra Rocket Company　2012/10/18
Performance Characterization of a Helicon Plasma Thruster International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell

the 11th APCPST (Asia Pacific Conference on Plasma Science and Technology) and 25th SPSM (Symposium on Plasma Science for Materials)　2012/10/02
Production of Two-Dimensional Periodic Plasma Structure by a 400 KHz Capacitively-Coupled Discharge International-presentation

Kazuaki Miyamoto, Kazunori Takahashi

the 11th APCPST (Asia Pacific Conference on Plasma Science and Technology) and 25th SPSM (Symposium on Plasma Science for Materials)　2012/10/02
Future Space Travel using Two New Concepts in Radiofrequency Plasma Sources International-presentation

Christine Charels, Rod Boswell, Kazunori Takahashi

the 11th APCPST (Asia Pacific Conference on Plasma Science and Technology) and 25th SPSM (Symposium on Plasma Science for Materials)　2012/10/02
永久磁石利用発散プラズマ源の大口径化とモデリング

鈴木達也, 高橋和貴, 藤原民也

電気学会平成24年基礎・材料・共通部門大会　2012/09/20
多極磁場を用いた無電極ヘリコンスラスターの性能評価

宮本和明, 高橋和貴, 藤原民也

電気学会平成24年基礎・材料・共通部門大会　2012/09/20
IGBT駆動強磁場配位下における高密度ヘリコンプラズマの特性

佐藤大樹, 高橋和貴, 藤原民也

電気学会平成24年基礎・材料・共通部門大会　2012/09/20
Direct thrust measurement of a permanent-magnets helicon plasma thruster for space propulsion International-presentation Invited

K. Takahashi

The International Conference on Open Magnetic Systems for Plasma Confinement 2012　2012/08/27
Production of a high-density helicon plasma under an IGBT-driven strong magnetic field International-presentation

D. Dato, K. Takahashi

The International Conference on Open Magnetic Systems for Plasma Confinement 2012　2012/08/27
Large-diameter permanent-magnets-expanding plasma source applicable to an electrodeless plasma thruster International-presentation

T. Suzuki, K. Takahashi

The International Conference on Open Magnetic Systems for Plasma Confinement 2012　2012/08/27
Production of a periodic plasma structrue by a 400 kHz capacitively-coupled discharge International-presentation

K. Miyamoto, K. Takahashi

The International Conference on Open Magnetic Systems for Plasma Confinement 2012　2012/08/27
定電流シャンティングアークプラズマの特性およびTiC膜生成

三河遼太, 高橋和貴, 高木浩一, 行村建

電気学会プラズマパルスパワー合同研究会　2012/08/08
ヘリコンプラズマスラスターにおける磁気ノズルの効果

高橋和貴, Christine Charles, Rod Boswell

電気学会プラズマパルスパワー合同研究会　2012/08/08
永久磁石を用いた大口径発散プラズマ源の特性

鈴木達也, 高橋和貴, 藤原民也

電気学会プラズマパルスパワー合同研究会　2012/08/08
多極磁場を利用した無電極ヘリコンスラスターの特性評価

宮本和明, 高橋和貴, 藤原民也

電気学会プラズマパルスパワー合同研究会　2012/08/08
Identification of thrust components in the Helicon Double Layer Thruster International-presentation

C. Charles, K. Takahashi, T. Lafleur, R.W. Boswell

Space Propulsion 2012　2012/05/07
永久磁石利用ヘリコンプラズマ源の推力直接計測

伊藤榛名, 高橋和貴, 藤原民也

日本物理学会2012年年次大会　2012/03/24
ヘリコンダブルレイヤープラズマ中の粒子エネルギー分布と電気推進への展開

高橋和貴

日本物理学会2012年年次大会若手研究者奨励賞受賞記念講演　2012/03/24
ダブルレイヤー形成によるプラズマ粒子加速と閉じ込めの研究

高橋和貴

SPERC文部大臣表彰記念講演　2012/01
ヘリコンダブルレイヤースラスターの直接推力計測

高橋和貴

プラズマ推進プロジェクト研究会　2011/12/21
ヘリコンダブルレイヤープラズマの電子エネルギー分布解析

高橋和貴, Christine Charles, Rod W. Boswell, 藤原民也

電気学会プラズマパルスパワー合同研究会　2011/12/15
永久磁石利用磁気ノズル下での高密度プラズマ生成と推力計測

伊藤陽菜, 高橋和貴, 宮本和明, 藤原民也

電気学会プラズマパルスパワー合同研究会　2011/12/15
プラズマ二次元周期構造による誘電率の空間変調

照井利弘, 高橋和貴, 宮本和明, 藤原民也

電気学会プラズマパルスパワー合同研究会　2011/12/15
シャンティングアークプラズマの半導体制御およびダブルプローブ計測

三河遼太, 高橋和貴, 高木浩一, 行村建

電気学会プラズマパルスパワー合同研究会　2011/12/15
Energy distribution of charged particles in a magnetically expanding plasma and their application to electric propulsion International-presentation

Kazunori Takahashi, Christine Charles, Rod Boswell, Tamiya Fujiwara

Plasma Conference 2011　2011/11/22
A review of low pressure expanding plasmas applied to electric propulsion, astrophysical objects, and nanotechnology International-presentation Invited

Rod Boswell, Christine Charles, Kazunori Takahashi

Plasma Conference 2011　2011/11/22
Characteristics of large diameter double-layer plasma source using permanent magnets International-presentation

Tatsuya Suzuki, Kazunori Takahashi, Tamiya Fujiwara

Plasma Conference 2011　2011/11/22
Investigation on a momenum of the charged particles in a permanent-magnets-expanded plasma International-presentation

Laluna Itho, Kazunori Takahashi, Tamiya Fujiwara

Plasma Conference 2011　2011/11/22
Experiments, simulations and modelling of the electron energy distribution functions in low pressure rf excited non-local plasmas International-presentation Invited

Rod Boswell, Christine Charles, Kazunori Takahashi

The 64th Annual Gaseous Electronics Conference　2011/11/14
Measurements and modeling of thrust in helicon thrusters International-presentation

Christine Charles, Kazunori Takahashi, Trevor Lafleur, Rod Boswell, Tamiya Fujiwara

The 32nd International Electric Propulsion Conference　2011/09/11
Spatiotemporal evolution of a magnetically expanding double layer plasma

Yoshimasa Sasaki, Kazunori Takahashi, Tamiya Fujiwara

平成23年度電気関係学会東北支部大会　2011/08/25
永久磁石利用ダブルレイヤープラズマ源の大口径化と終端版の効果

鈴木達也, 高橋和貴, 藤原民也

平成23年度電気関係学会東北支部大会　2011/08/25
ダブルレイヤープラズマ中超音速イオン流の密度計測と推力の検討

伊藤陽菜, 高橋和貴, 藤原民也

平成23年度電気関係学会東北支部大会　2011/08/25
トリガ方式によるバリア放電帯状プラズマの伸長化に関する一考察

伊藤榛名, 高橋和貴, 向川政治, 志田豊, 高木浩一, 藤原民也

電気学会パルスパワー放電合同研究会　2011/06/04
シャンティングアーク放電による炭素・チタン混合プラズマの生成

三河遼太, 青木宏憲, 高橋和貴, 高木浩一, 藤原民也

電気学会パルスパワー放電合同研究会　2011/06/04
永久磁石利用大口径ダブルレイヤープラズマ源の開発

鈴木達也, 高橋和貴, 藤原民也

電気学会パルスパワー放電合同研究会　2011/06/04
大口径高密度ヘリコンプラズマ中発散磁場領域における静電イオン加速現象

伊藤裕紀, 五十嵐勇一, 高橋和貴, 谷川隆夫

平成22年度スペースプラズマ研究会　2011/03
シャンティングアークによるイオン生成とそれを用いた複合成膜

青木宏憲, 高橋和貴, 高木浩一

平成22年度核融合科学研究所共同研究形式研究会: パルスパワー技術を基礎とするプラズマの物理とその応用　2010/12
シャンティングアークによる金属イオン含有プラズマの生成

青木宏憲, 高橋和貴, 高木浩一

平成22年度核融合科学研究所共同研究形式研究会: パルスパワー技術を基礎とするプラズマの物理とその応用　2010/12
Plasma-potential structures correlating with ion-beam divergence in magneticaly expanding plasma

Y. Igarashi, K. Takahashi, T. Fujiwara

平成22年度電気関係学会東北支部連合大会　2010/08/26
Development of a large diameter magnetically expanding plasma source using permanent magnets

Y. Itoh, K. Takahashi, T. Fujiwara

平成22年度電気関係学会東北支部連合大会　2010/08/26
Production of high-density radiofrequency plasma under a divergent magnetic field provided by permanent magnets

K. Suzuki, K. Takahashi, T. Fujiwara

平成22年度電気関係学会東北支部連合大会　2010/08/26
Production of titanium containing carbon plasma

H. Aoki, K. Takahashi, K. Takaki

平成22年度電気関係学会東北支部連合大会　2010/08/26
プラズマ周期配列構造の形成

照井利弘, 高橋和貴, 藤原民也

平成22年度電気関係学会東北支部連合大会　2010/08/26
浮遊電極を有する自己消弧放電の放電特性

松本創, 志田寛, 高橋和貴, 向川政治, 高木浩一, 藤原民也

平成22年度電気関係学会東北支部連合大会　2010/08/26
コロナ放電式イオナイザーによる発生電荷の空間分布計測

佐藤慎, 高橋和貴, 高木浩一, 藤原民也

平成22年度電気関係学会東北支部連合大会　2010/08/26
高密度ヘリコン波プラズマ中のダブルレイヤー粒子加速

高橋和貴, 小国薫, 谷川隆夫, 篠原俊二郎, 藤原民也

平成21年度スペースプラズマ研究会　2010/03/11
ダブルレイヤーイオン加速の大出力化へ向けて

高橋和貴

平成２１年度東北大学電気通信研究所共同プロジェクト研究会プラズマの流れが生み出す新機能性場の基礎と応用　2010/02/22
ダブルレイヤーイオン加速制御法の模索

高橋和貴, 志田寛, 藤原民也

宇宙関連プラズマ研究会 2009　2009/12/16
ダブルレイヤー駆動イオンビームの空間分布に関与するプラズマ電位構造計測

五十嵐勇一, 高橋和貴, 藤原民也

第26回プラズマ核融合学会年会　2009/12/01
ダブルレイヤー駆動イオンビームへの発散磁場の効果

高橋和貴, 志田寛, 藤原民也

第26回プラズマ核融合学会年会　2009/12/01
Enhanced ion acceleration due to the presence of neutralizing electrons in a magnetically expanding plasma International-presentation

Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

The 7th General Scientific Assembly of the Asia Plasma and Fusion Association 2009 and the Asia-Pacific Plasma Theory Conference 2009　2009/10/27
Enhanced ion acceleration due to the presence of neutralizing electrons in a magnetically expanding plasma International-presentation

Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

The 7th General Scientific Assembly of the Asia Plasma and Fusion Association 2009 and the Asia-Pacific Plasma Theory Conference 2009　2009/10/27
High-power operation of a magnetically expanding plasma using permanent magnets International-presentation

Kaoru Oguni, Kazunori Takahashi, Yutaka Shida, Tamiya Fujiwara

The 7th General Scientific Assembly of the Asia Plasma and Fusion Association 2009 and the Asia-Pacific Plasma Theory Conference 2009　2009/10/27
Electron energy distributions in a radiofrequency plasma expanded by permanent magnets International-presentation

Tomoyo Sasaki, Kazunori Takahashi, Tamiya Fujiwara

The 7th General Scientific Assembly of the Asia Plasma and Fusion Association 2009 and the Asia-Pacific Plasma Theory Conference 2009　2009/10/27
コロナ放電式イオナイザーにおける発生電荷種の空間分布計測

佐藤慎, 高橋和貴, 藤原民也

平成21年度電気関係学会東北支部連合大会　2009/08/20
Ion acceleration in a high-density rf plasma expanded by permanent magnets

K. Oguni, K. Takahashi, T. Fujiwara

平成21年度電気関係学会東北支部連合大会　2009/08/20
Detailed measurement of the plasma-potential structure in a magnetically expanding plasma

Y. Igarashi, K. Takahashi, T. Fujiwara

平成21年度電気関係学会東北支部連合大会　2009/08/20
永久磁石利用発散プラズマ中のダブルレイヤーイオン加速

高橋和貴, 五十嵐勇一, 志田寛, 藤原民也

電気学会プラズマ・パルスパワー・放電合同研究会　2009/08/06
浮遊電極を利用した自己消弧放電による大気圧プラズマの発生

松本創, 志田寛, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気学会プラズマ研究会　2009/06/13
発散プラズマ中ダブルレイヤー形成に関与する粒子挙動

高橋和貴, Christine Charles, Rod Boswell, Wex Cox, 畠山力三, 藤原民也

平成２０年度スペースプラズマ研究会　2009/03/05
コロナ放電イオナイザーによる除電の計算機シミュレーション

池内達, 高橋和貴, 大久保貴広, 藤原民也

電気学会プラズマ研究会　2008/12/19
発散磁場配位中ダブルレイヤー形成による無電極静電イオン加速

高橋和貴, 藤原民也

宇宙関連プラズマ研究会２００８　2008/12/16
永久磁石利用発散型プラズマ源の基礎特性

小国薫, 高橋和貴, 藤原民也

電気学会プラズマ研究会　2008/10/31
永久磁石利用発散プラズマ中のダブルレイヤー形成

高橋和貴, 山田弘, 藤原民也

日本物理学会２００８年秋季大会　2008/09/20
Electron energy distribution functions correlating with the formation of a helicon double layer International-presentation

K. Takahashi, C. Charles, R. W. Boswell, R. Hatakeyama

International Congress on Plasma Physics 2008　2008/09/08
Electron energy distribution functions correlating with the formation of a helicon double layer International-presentation

K. Takahashi, C. Charles, R. W. Boswell, R. Hatakeyama

International Congress on Plasma Physics 2008　2008/09/08
Double layer formation in a low-pressure argon plasma expanded by permanent magnets International-presentation

K. Takahashi, K. Oguni, H. Yamada, T. Fujiwara

International Congress on Plasma Physics 2008　2008/09/08
Spatial characterization of the plasma density in a magnetically expanding plasma using permanent magnets International-presentation

T. Sasaki, K. Takahashi, K. Oguni, T. Fujiwara

International Congress on Plasma Physics 2008　2008/09/08
Expanding plasma source using permanent magnets for generation of supersonic ion beam International-presentation

Kazunori Takahashi, Hiroshi Yamada, Tamiya Fujiwara

International Interdisciplinary-Symposium on Gaseous and Liquid Plasmas　2008/09/05
永久磁石利用へリコンプラズマ中の静電粒子加速

高橋和貴, 山田弘, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
Basic characteristics of an expanding plasma using permanent magnets

小国薫, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
Density profile of a magnetically expanding plasma using permanent-magnet arrays

佐々木智世, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
窒素雰囲気下コロナ放電イオナイザーにおける発生電荷種の検討

大久保貴広, 高橋和貴, 池内達, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
シャンティングアークを用いた混合プラズマの生成とプラズマイオン注入によるTi-DLC成膜

村上貴之, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
誘電体バリア放電方式を用いたオゾン生成特性

畑中友貴, 高橋和貴, 向川政治, 高木浩一, 藤原民也, 三浦友規

電気関係学会東北支部平成20年度連合大会　2008/08/21
バリア放電を用いたNO除去におけるガス条件が与える影響

内藤潤, 高橋和貴, 向川政治, 高木浩一, 藤原民也, 三浦友規

電気関係学会東北支部平成20年度連合大会　2008/08/21
大気圧プラズマジェットにおける湿度の影響

伊藤寛, 北慎勇希, 志田寛, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
LiNbO3結晶を用いた大気圧ジェットプラズマから基板への熱流速の測定

下河原孝夫, 向川政治, 志田寛, 高橋和貴, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
パックドベッドプラズマリアクタの誘電体ペレット材質の影響]

高橋慎哉, 高橋和貴, 向川政治, 高木浩一, 藤原民也, 菅原拓男, 菅原勝康

電気関係学会東北支部平成20年度連合大会　2008/08/21
パルス通電セラミックス接合法における回路パラメータの影響

山岸則之, 高橋和貴, 向川政治, 高木浩一, 藤原民也

電気関係学会東北支部平成20年度連合大会　2008/08/21
Polarization reversal of electron cyclotron waves creating plasma-potential structures in laboratory plasmas International-presentation Invited

Kazunori Takahashi, Toshiro Kaneko, Rikizo Hatakeyama

The XXIX General Assembly of the International Union of Radio Science　2008/08/07
次世代パワースイッチング電源の開発

高橋和貴, 高木浩一, 和気正芳, 安東愛之輔

高エネルギー加速研究機構ワークショップ　2008/07/30
窒素雰囲気でのコロナ放電イオナイザーによる電荷の発生と空間分布

大久保貴広, 高橋和貴, 池内達, 向川政治, 高木浩一, 藤原民也

電気学会プラズマ研究会　2008/07/04
永久磁石を用いた発散プラズマ中超音速イオン流形成

高橋和貴, 小国薫, 佐々木智世, 山田弘, 藤原民也

第7回核融合エネルギー連合講演会　2008/06/19
窒素雰囲気でのコロナ放電イオナイザーの動作特性と除電効果

村上太一, 大久保貴広, 高橋和貴, 向川政治, 高木浩一, 藤原民也, 伊藤剛, 豊田一行

電気学会プラズマ研究会　2007/12/22
ヘリコンダブルレイヤープラズマ中の電子エネルギー分布関数測定

高橋和貴, Christine Charles, Rod Boswell, 金子俊郎, 畠山力三

プラズマ核融合学会第24回年会　2007/11/27
不均一加熱によるECR駆動ダブルレイヤーの崩壊

高橋和貴, 金子俊郎, 畠山力三

プラズマ核融合学会第24回年会　2007/11/27
コロナ放電式イオナイザーによる多層積載シリコンウェーハの除電

大久保貴広, 大谷勝, 高橋和貴, 向川政治, 高木浩一, 藤原民也, 伊藤剛, 豊田一行

第31回静電気学会全国大会　2007/09/10
The formation of plasma potential structures triggered by electron cyclotron waves with non-axisymmetric modes in converging magnetic-field configurations International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 9th International Workshop on the Interrelationship between Plasma Experiments in Laboratory and Space　2007/08/05
Electron dynamics in current-free helicon double layer International-presentation

K. Takahashi, C. Charles, R. W. Boswell, T. Kaneko, R. Hatakeyama

The 9th International Workshop on the Interrelationship between Plasma Experiments in Laboratory and Space　2007/08/05
Generation of Flowing Nitrogen Ions in Magnetized Plasmas International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The Joint International Conference of the 4th International Symposium on System Construction of Global-Network-Oriented Information Electronics and Student-Organizing International Mini-Conference on Information Electronics System　2007/01/23
電子サイクロトロン周波数帯電磁波の偏波方向反転に伴うプラズマ電位構造形成

金子俊郎, 高橋和貴, 畠山力三

プラズマ核融合学会第23回年会　2006/11/28
不均一磁化プラズマ中ダブルレイヤー形成に関与する電子サイクロトロン波の伝搬特性

高橋和貴, 金子俊郎, 畠山力三, 福山淳

プラズマ核融合学会第23回年会　2006/11/28
大電力電子サイクロトロン波と低周波プラズマ波動の非線形結合特性

高橋和貴, 金子俊郎, 畠山力三, 斉藤輝雄, 立松芳典, 野崎潔, 町田紀人, 貝塚徹也, 中村真理亜, 板倉昭慶, 吉川正志, 長照二

プラズマ核融合学会第23回年会　2006/11/28
Energy Control of Field-Aligned Ion Flow in Magnetized Plasmas International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 3rd Student-Organizing International Mini-Conference on Information Electronics System　2006/10/06
電子サイクロトロン共鳴誘起ダブルレイヤー形成へのマイクロ波入射モードの効果

高橋和貴, 金子俊郎, 畠山力三

日本物理学会2006年秋季大会　2006/09/23
Nonlinear Effects of High Power Plug/Barrier ECRH on Propagation and Radiation of Cyclotron Waves International-presentation Invited

R. Hatakeya, T. Kaneko, K. Takahashi, T. Saito, Y. Tatematsu, K. Nozaki, N. Machida, T. Kaitsuka, A. Itakura, M. Yoshikawa, T. Cho

The 6th International Conference on Open Magnetic Systems for Plasma Confinement　2006/07/17
1-Dimmensional Analysis of Polarization Reversal Relating to Electron Cyclotron Resonance International-presentation

K. Takahashi, A. Fukuyama, T. Kaneko, R. Hatakeyama

The 6th International Conference on Open Magnetic Systems for Plasma Confinement　2006/07/17
反応性磁化プラズマ中のイオンフロー制御

金子俊郎, 高橋和貴, 畠山力三

第6回核融合エネルギー連合講演会　2006/06/13
不均一磁化プラズマ中m =±1モード電子サイクロトロン波入射に伴う電位構造形成

高橋和貴, 金子俊郎, 畠山力三

第6回核融合エネルギー連合講演会　2006/06/13
New Aspects on Plasma Wave and Instability Phenomena -Flow Shear, Polarization Reversal, and Pair Ions- International-presentation

R. Hatakeyama, T. Kaneko, W. Oohara, K. Takahashi

The 13th International Congress on Plasma Physics　2006/05/22
Effects of Ion Flow Energy on Self-Consistent Double-Layer Formation Due to ECR in a Conversing Magnetic Field International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 13th International Congress on Plasma Physics　2006/05/22
Polarization-Reversal-Induced Absorption of an Axisymmetric Left-Hand Polarized Wave on Electron Cyclotron Resonance International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 13th International Congress on Plasma Physics　2006/05/22
不均一磁場配位下における高速プラズマ流中電子サイクロトロン共鳴に伴うダブルレイヤー形成

高橋和貴, 金子俊郎, 畠山力三

日本地球惑星科学連合2006年大会　2006/05/14
局所電子サイクロトロン共鳴に伴うダブルレイヤー形成へのイオンフローエネルギーの効果

高橋和貴, 金子俊郎, 畠山力三

日本物理学会第61回年次大会　2006/03/27
Ion Flow Energy Control in Magnetized Plasmas International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 6th International Conference on Reactive Plasmas and 23rd Symposium on Plasma Processing　2006/01/24
大電力電子サイクロトロン共鳴加熱に伴う放射電磁波の非線形特性

金子俊郎, 高橋和貴, 斉藤輝雄, 野崎潔, 町田紀人, 貝塚徹也, 立松芳典, 板倉昭慶, 吉川正志, 長照二, 畠山力三

プラズマ核融合学会第22回年会　2005/11
１次元コードを用いた不均一磁化プラズマ中電子サイクロトロン波の偏波反転解析

高橋和貴, 福山淳, 金子俊郎, 畠山力三

プラズマ核融合学会第22回年会　2005/11
Polarization-Reversal Induced Damping of Left-Hand Polarized Wave with High Order Radial Mode on Electron Cyclotron Resonance International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 28th General Assembly of International Union of Radio Sciences　2005/10/25
A Polarization Reversal Mechanism of Electromagnetic Waves in Inhomogeneously Magnetized Plasmas International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 2nd Student-Organizing International Mini-Conference on Information Electronics System　2005/10/04
磁化プラズマ中イオンフローの生成・制御

高橋和貴, 金子俊郎, 畠山力三

日本物理学会2005年秋季大会　2005/09
Development of Low-Temperature Plasma Source Suitable for Ion Flow Energy Control in Strong Magnetic Fields International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The XXVII International Conference on Phenomena in Ionized Gases　2005/07/17
高次モード左旋偏波の電子サイクロトロン減衰

高橋和貴, 金子俊郎, 畠山力三

Plasma Science Symposium 2005 / 22nd Symposium on Plasma Processing　2005/01
軸対称モード電子サイクロトロン波の偏波特性

高橋和貴, 金子俊郎, 畠山力三

プラズマ・核融合学会第21回年会　2004/11
Polarization Reversal of Electron Cyclotron Wave Due to Radial Boundary Condition International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 12th International Congress on Plasma Physics　2004/10/25
不均一磁化プラズマ中ECR周波数帯左旋偏波の局所減衰機構

高橋和貴, 金子俊郎, 畠山力三

日本物理学会2004年秋季大会　2004/09
電子サイクロトロン共鳴に関与する左旋偏波の偏波方向反転機構

高橋和貴, 金子俊郎, 畠山力三

平成16年度電気学会基礎材料共通部門全国大会　2004/08
m=0モード電子サイクロトロン波の偏波方向反転機構

高橋和貴, 金子俊郎, 畠山力三

第5回核融合エネルギー連合講演会　2004/06
Localized Absorption of High-Frequency Electromagnetic Wave Due to Polarization Reversal near the ECR Point International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

International COE Forum on Plasma Science and Technology　2004/04/05
不均一磁化有限境界プラズマ中ECR周波数帯電磁波の偏波方向反転機構

高橋和貴, 金子俊郎, 畠山力三

東北大学電気通信研究所共同プロジェクト研究会　2003/12
Polarization Reversal and Electron Cyclotron Damping of Electromagnetic Wave in an Inhomogeneously Magnetized-Plasma-Filled Waveguide International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 1st Student-Organizing International Mini-Conference on Information Electronics Systems　2003/11/04
有限境界プラズマ中ECR周波数帯左旋偏波の偏波方向反転機構

高橋和貴, 金子俊郎, 畠山力三

プラズマ・核融合学会第20回年会　2003/11
Effects of Laboratory Plasma Parameters on the Polarization Reversal of Circularly Polarized Waves in the Frequency Range of Electron Cyclotron Resonance International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

International Topical Conference on Plasma Physics 2003　2003/09/08
Characteristics of a Polarization Reversal near the ECR Point in an Inhomogeneously Magnetized Plasma

高橋和貴, 金子俊郎, 畠山力三

平成15年度電気学会東北支部連合大会　2003/08
磁化プラズマ中左旋円偏波の偏波方向反転に対するプラズマ境界の効果

金子俊郎, 高橋和貴, 畠山力三

プラズマ科学のフロンティア2003研究会　2003/08
Propagation and Damping Characteristics of Left-Hand Polarized Wave near the ECR point in an Inhomogeneously Magnetized Plasma International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 40th Culham Plasma Physics Summer School　2003/07/14
Damping Mechanisms of Left-Hand Polarized Wave near the Electron Cyclotron Resonance Point in an Inhomogeneously Magnetized Plasma International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 30th European Physical Society Conference on Controlled Fusion and Plasma Physics　2003/07/07
ECR周波数帯円偏波の偏波方向反転に対するプラズマパラメータの効果

高橋和貴, 金子俊郎, 畠山力三

日本物理学会第58回年次大会　2003/03
不均一磁化有限プラズマ中左旋偏波の電子サイクロトロン減衰

高橋和貴, 金子俊郎, 畠山力三

電気学会プラズマ研究会　2003/03
ミラー型不均一磁化有限プラズマ中電磁波の伝搬・減衰特性

高橋和貴, 金子俊郎, 畠山力三

プラズマ研究センターフォーラム　2003/03
偏波方向反転に伴う左旋偏波の電子サイクロトロン減衰

高橋和貴, 金子俊郎, 畠山力三

プラズマ・核融合学会第19回年会　2002/11
不均一磁化プラズマ中左旋偏波の偏波方向反転

高橋和貴, 金子俊郎, 畠山力三

プラズマ科学のフロンティア2002研究会　2002/10
Polarization Reversal of Circularly Polarized Wave Related to Electron Cyclotron Damping International-presentation

K. Takahashi, T. Kaneko, R. Hatakeyama

The 4th International Conference Open Magnetic Systems for Plasma Confinement 2002　2002/07/01
MEMS用ミニマルヘリコンプラズマエッチャー

高橋和貴, 田中信明, 亀井龍一郎, 原史朗

ファブシステム研究会春季大会　2023/04/21
ミニマルヘリコンプラズマエッチャーの開発状況

高橋和貴

ミニマルファブプラズマ研究会　2023/04/20
プラズマ材料科学分野の歴史と将来展望 Invited

高橋和貴

JSPS プラズマ材料科学第153委員会研究会　2023/01/27
ミニマルファブ向けヘリコンプラズマ源を用いたマルチターゲットスパッタリング装置の開発 Invited

高橋和貴

日本表面真空学会スパッタリングおよびプラズマプロセス技術部会第173回定例研究会　2023/01/20

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Industrial Property Rights 11

マルチモード推進装置および飛翔体

齋藤勇士, 高橋和貴, 桒原聡文

Property Type: Patent
スペースデブリ除去装置およびスペースデブリ除去方法

高橋和貴

Property Type: Patent
イオンビーム照射装置

津守克嘉, 永岡賢一, 中野治久, 高橋和貴

Property Type: Patent
微細立体構造形成方法，微細立体構造，プラズマエッチング装置及びガス供給システム

高橋和貴, 原史朗, 石田夕起, 亀井龍一郎, 薮田勇気, 大滝英司, 田中信明

Property Type: Patent
Plasma generating device, plasma sputtering device, and plasma sputtering method

Kazunori Takahashi, Jun Fukushima, Akira Ando, Yasumasa Sasaki

Property Type: Patent
イオンフロー制御型プラズマ源、及び、誘導フラーレンの製造方法

畠山力三, 金子俊郎, 高橋和貴, 笠間泰彦, 表研次

Property Type: Patent
プラズマ処理装置、プラズマ生成方法、およびセルフバイアス印加方法

高橋和貴, 原史朗

Property Type: Patent
ドライエッチング装置及びプラズマスパッタリング装置

本村大成, 笠嶋悠司, 上杉文彦, 高橋和貴

Property Type: Patent
ドライエッチング方法

本村大成, 笠嶋悠司, 上杉文彦, 高橋和貴

Property Type: Patent
プラズマ発生装置、プラズマスパッタリング装置及びプラズマスパッタリング方法

高橋和貴, 福島潤, 佐々木保正

Property Type: Patent
薄膜形成方法及び当該装置

福島潤, 高橋和貴, 安藤晃, 滝澤博胤, 佐々木保正

Property Type: Patent

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Research Projects 25

Research on a high-power magnetic nozzle plasma thruster

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (S)

Institution: Tohoku University

2023/04/12 - 2028/03/31
大電力磁気ノズルプラズマ推進機による宇宙輸送革新

高橋和貴

Offer Organization: 科学技術振興機構

System: 戦略的な研究開発の推進創発的研究支援事業

Institution: 東北大学

2022/04 - 2028

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宇宙ミッションの多様化が進む中で、大規模ミッション実現に向けた宇宙輸送技術の重要性が高まっています。本研究では、高周波プラズマ生成と磁気ノズル中のプラズマ加速・運動量変換過程を利用した大電力・無電極のプラズマ推進機に関して、プラズマ流の学術基盤構築、特にプラズマ中の乱れや構造形成による動的輸送の理解と制御、それらの知見に基づいた推進機の高性能化へと挑戦し、革新的な宇宙輸送技術を創出します。
Thrust enhancement of a small plasma thruster by dual ion gridded thruster utilizing a photocatalyst

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2024/06/28 - 2027/03/31
Plasma detachment from a magnetic nozzle driven by instabilities, waves, and turbulence

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2023/04/01 - 2027/03/31
Development and ground test of a helicon plasma thruster for spacecraft propulsion Competitive

Kazunori Takahashi

Offer Organization: Japan Society for the Promotion of Science

System: Japan Society for the Promotion of Science, Bilateral Collaborations

Category: JSPS&DAAD collaboration

Institution: Tohoku University

2024/04 - 2026/03
Laboratory simulation of astrophysical phenomena via interaction between a low-pressure plasma and dynamic liquid metal

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

Category: Grant-in-Aid for Challenging Research (Exploratory)

Institution: Tohoku University

2021/07/09 - 2024/03/31
Plasma momentum transport and detachment from a magnetic nozzle

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2019/04/01 - 2023/03/31
Beam extraction boundary physics and control of particle dynamics for steady state negative ion sources

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Institution: National Institute for Fusion Science

2018/10/09 - 2023/03/31
Beam extraction boundary physics and control of particle dynamics for steady state negative ion sources Competitive

Kenichi Nagaoka, Kenji Miyamoto, Masashi Kisaki, Kazunori Takahashi, Haruhisa Nakano, Shuji Kamio, Yasuaki Haba

System: Japan Society for the Promotion of Science, JP18KK0080

Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Institution: College of Industrial Technology, Nihon University

2018/10 - 2023/03
Development of a space debris removal technology by a bi-directional plasma acceleration

TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Challenging Research (Exploratory)

Category: Challenging Research (Exploratory)

Institution: Tohoku University

2018/06/29 - 2021/03/31

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The present study demonstrates that the bi-directional plasma exhaust and acceleration can occur in an electrodeless, magnetic nozzle, rf plasma thruster; the plasma flux exhausted from the thruster to the upstream and downstream sides can be controlled by the magnetic field configuration. The thrust and the force exerted to the target plate simulating the space debris are simultaneously measured. The results demonstrate that the acceleration and deceleration modes of the spacecraft and the space debris removal modes can be switched by the magnetic field configuration. Furthermore, an automatically- and fast-controlled frequency tunable rf system is developed for future development of the propulsion module, where the rf frequency and the output power are controlled so as to minimize the reflection coefficient and to maintain the net rf power. This fast and compact system can produce the high density plasma with good reproducibility,
New concept of electric propulsion using a liquid metal sputtering

ANDO Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Challenging Research (Exploratory)

Category: Challenging Research (Exploratory)

Institution: Tohoku University

2018/06/29 - 2021/03/31

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Principle demonstration of the thrust generation by an efficient emission of the metallic material due to a plasma sputtering phenomenon is successfully performed, where the conventional magnetron sputtering source is used for the experiment. The detected thrust is significantly affected by the target material and the variation well agrees with the sputtering yield, which is the number of the sputtered target atom by an incident ion. Furthermore, the measured ion density downstream of the sputtering source shows that the thrust induced by the charged particles is much less than the actually detected thrust, i.e., is negligible, ensuring the thrust generation by the sputtering phenomenon. For further development of the compact electric propulsion system, the experiment is extended to the plasma production and sputtering by using the liquid metallic propellant of cesium. Further improvement of the propellant seeding is required in near future.
宇宙空間での長寿命・大電力動作を可能とする高周波プラズマエンジンの開発

高橋和貴

Offer Organization: 科学技術振興機構

System: 産学が連携した研究開発成果の展開研究成果展開事業研究成果最適展開支援プログラム(A-STEP) トライアウトトライアウト

Institution: 東北大学

2020 - 2021

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宇宙空間での大量物資輸送,有人惑星探査等に向けた5-10kW級以上の大電力電気推進機の開発が求められている.本研究では,物理研究を重視して進めてきた無電極プラズマ生成・加速を可能とする高周波プラズマ生成法と磁気ノズル加速を組み合わせたプラズマエンジンの開発をステージアップし,作動電力5kW以上,推力60mN以上,推進効率20%以上を得るとともに,その安定動作を実現する.これにより,大電力エンジンの開発を実現するための基盤技術を構築し,実用開発研究へとつなげる.申請者らが明らかにしてきた推力発生機構に関する知見を基盤として高性能化実証実験を行い,無電極プラズマエンジンの実用化を目指す.
Investigation of boundary structure of ionic pair plasma and development of high perfomance negative ion beam

Kenichi Nagaoka

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: National Institute for Fusion Science

2017/04/01 - 2020/03/31

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Two mechanisms those degrade negative ion beam focusing were experimentally identified in this study. One is dynamic behavior of beamlet such as time evolution of beamlet width and beamlet axis position responding to the plasma density in negative ion source. This mechanism is more important for RF negative ion source. The other is caused by behaviors of triple Gaussian beam identified in the phase space structure of negative ion beam. The coincidence of three beam axis is very important element for focusing of negative ion beamlet. These results modified the concept of negative ion beam meniscus, and pointed out that the conventional approach to negative ion beam meniscus modeling should be improve.
Transport and control of plasma momentum associated with a plasma-gas interaction in a plasma thruster

TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2016/04/01 - 2019/03/31

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It has been shown that the plasma-gas interaction in an electrodeless high density plasma thruster plays important roles in the momentum transport, the momentum loss to the wall, and the generation of the thrust. By progressing the understanding and developing the control method of the plasma-gas interaction, generation of the high-density plasma flow and the performance improvement of the plasma thruster has been performed. These insight and laboratory experiments can provide various interesting phenomena such as a transition of the plasma-flow-state from diverging to stretching the magnetic nozzle, and the adiabatic expansion of free electrons in the magnetic nozzle. These insight will contribute to expansion of fundamental scientific researches and thruster development hereafter. Furthermore, development of peripheral equipment such as the RF system was started; leading further expansion of the research to the engineering step.
Understanding a magnetic nozzle plasma flow dynamics and extension to a high power electric propulsion

Ando Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

Category: Grant-in-Aid for Scientific Research (A)

Institution: Tohoku University

2014/04/01 - 2018/03/31

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Plasma flow dynamics in magnetic nozzle are investigated over wide ranges of several parameters such as a plasma density, ion and electron temperatures, and a plasma flow velocities by using a current-driven magnetoplasmadynamic (MPD) thruster and a current-free helicon plasma thruster. The experiments demonstrate that the spatial profile of the external discharge current is controllable for the MPD thruster by the magnetic field configuration; resulting in the improvement of the thruster performance. For the case of the helicon thruster, the Lorentz force due to the spontaneous azimuthal plasma current and the radial magnetic field of the nozzle is a key factor to increase the thrust imparted by the thruster. By combining these two concept of the thruster, the novel high power thruster called a helicon MPD thruster is also demonstrated in the laboratory experiments.
半導体シールドパッケージ用の小型磁性体スパッタリング装置開発

高橋和貴

Offer Organization: 科学技術振興機構

System: 産学が連携した研究開発成果の展開研究成果展開事業熊本復興支援(地域産学バリュープログラム)

Institution: 東北大学

2017 -
Thrust generation mechanisms by a helicon plasma thruster and its performance improvement

Takahashi Kazunori, ANDO Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2013/04/01 - 2016/03/31

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Thrust generation mechanisms in a magnetic nozzle, electrodeless helicon plasma thurster are experimentally and theoretically investigated. The individual and direct measurement of the thrust components arising from the physical boundaries and magnetic nozzle are performed for the first time. This technique clearly evidences the presence of the thrust gain by the mangetic nozzle even in the current-free plasma thruster. The comparison between the measured thrust and the plasma parameters reveal that the Lorentz force due to the azimuthal plasma current and the radial magnetic field accelerates the plasmas and increases their axial momentum; then the thrust corresponding to the axial plasma momentum is increased. Furthermore, the novel loss mechanisms of the axial momentum to the lateral wall is discovered here. Based on the above studies, the higher performance thruster is successfully designed and operated in the laboratory.
Production of high-density plasma using pulsed glow discharge and its applications for surface treatment

TAKAKI Koichi, MUKAIGAWA Seiji, TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Category: Grant-in-Aid for Scientific Research (C)

Institution: Iwate University

2012/04/01 - 2015/03/31

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Repetitive high-power pulsed power generators were developed for production of high-density plasmas in wide gas pressure range from 0.1 Pa to atmospheric gas pressure. The produced high-density plasmas were utilized for plasma thruster, surface treatment of polymeric materials and amorphous carbon thin film deposition on the 3D materials. The repetitive pulsed power generator consisted of four insulated gate bipolar transistors (IGBTs), capacitors and dc high voltage power supply. The high-density plasmas were produced with the developed pulsed power supply and was controlled spatially using unbalanced magnetic field generated with permanent magnet array. The produced plasmas had more than 10e18m-3 in number density, and 1-9 eV in electron temperature. The produced plasma provided 15 mN in thrust force and prepared amorphous carbon thin film on 3D material. The SP3/SP2 ratio of the prepared film was 0.55 analyzed by Raman spectra.
無電極ヘリコンプラズマ推進機の開発

高橋和貴

System: 産学が連携した研究開発成果の展開研究成果展開事業研究成果最適展開支援プログラム(A-STEP) 探索タイプ

Institution: 岩手大学

2012 - 2013

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本研究では、宇宙空間における主動力推進エンジンとして応用が期待される磁気ノズル搭載型の無電極ヘリコンプラズマ推進機の開発とその推力計測を行った。当該推進機は、プラズマ生成、静電・電磁プラズマ加速、噴射イオンの電気的中和という電気推進機に必要となる一連の動作を無電極で実現可能であり、損傷個所が無いため他の方式に比べて原理的に長寿命化が可能な電気推進機が実現できると期待される。磁気ノズルの磁場強度を増強し推力が増大することが示され、10mNを超える推力が得られることが示された。また、磁気ノズルを永久磁石によってのみ形成することに成功し、現時点で推力15mN、比推力2000秒を得ることに成功した。
Direct measurement of a wave propagating inside a plasma photonic crystal for investigating a novel functional property

TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

2011 - 2013

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In order to directly measure the electromagnetic field of the waves propagating inside photonic crystals, the dielectric constant in the argon gas is spatially modified by the presence of the low-pressure discharge. The periodic plasma structure is successfully produced by locating the high-voltage electrode, which has a periodic structure and is biased by a 400 kHz radiofrequency power supply, the plasma density above 10^10 cm^-3 can be obhtained. The microwave is also injected into the plasma photonic crystal and the appearance of the propagation band-gap is detected near the frequency of 2-3 GHz. The wave propagation in such periodic plasma structure is analyzed in one-dimensional model and the results are in fair agreement with the transmittance characteristic observed in the experimental plasma photonic crystal. This will provide important insights into the photonic cyrstal physics in linear and non-linear regime.
Control and Improvement of a double layer ion acceleration in a magnetically expanding plasma

TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (A)

Category: Grant-in-Aid for Young Scientists (A)

Institution: Iwate University

2010 - 2012

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Plasma dynamics in a magnetically expanding plasma including an electric double layer (DL) and its potential application to an electric propulsion device are investigated here. More efficient permanent magnet helicon plasma source is also developed and a generation of the large diameter ion beam is achieved. Further, the thrust imparted from a magnetic nozzle helicon plasma thruster is directly measured for the first time and compared with the theory.
Development and applications of a novel low-temperature plasma source under atmospheric pressure

FUJIWARA Tamiya, TAKAKI Koichi, MUKAIGAWA Seiji, TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

Category: Grant-in-Aid for Scientific Research (C)

Institution: Iwate University

2008 - 2010

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A novel atmospheric pressure plasma source has been developed. The source has an array of many copper dots with floating potential on the dielectric barrier surface. The floating electrodes, that is, the copper dots decreased the breakdown voltage by about 20% as compared with barrier discharge. It was clarified that a discharge occur around edges of copper dot and it move to a region separated from floating electrodes and at a short distance from them as time pass. It was found from a preliminary experiment of surface treatment that this plasma source is applicable to applications in the field of low-temperature plasma.
Plasma Source Development for an advanced electrodeless electric propulsion

TAKAHASHI Kazunori

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

Category: Grant-in-Aid for Young Scientists (B)

Institution: Iwate University

2008 - 2009

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Ion energy distribution function, plasma density, and plasma-potential structure are experimentally investigated in a magnetically expanding plasma source using permanent magnets, connected to a large-diameter, 76-cm-diameter and 100-cm-long vacuum chamber. In the machine, a rapid potential drop due to a formation of an electric double layer spontaneously forms and a resulting supersonic ion beam accelerated by the double layer are detected in the downstream diffusion chamber. As a result of a comparison with the previously performed experiments in the small diffusion chamber, the observed electrodeless and electrostatic ion acceleration is found not to be affected by a boundary condition in the diffusion chamber region. The results demonstrate that the source would be applicable to the electric propulsion devices.
無電極粒子加速を目指した永久磁石利用へリコン波プラズマ源の開発

高橋和貴

Offer Organization: 日本学術振興会

System: 科学研究費助成事業若手研究(スタートアップ)

Category: 若手研究(スタートアップ)

Institution: 岩手大学

2007 - 2008

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直径26cm,長さ30cmのステンレス製真空容器にガラス管を接続した真空容器の設計製作を行い,ガラス管周辺に可動式永久磁石アレイ二組を設置することで,下流側にカスプ磁場の存在しない発散型磁場配位の形成を実現した.真空容器内部にアルゴンガスを導入した後に,高周波ループアンテナに13.56MHz,250Wの高周波電力を,整合回路を介して投入することで最大5×10^<11>cm^<-3>の高密度プラズマの生成に成功した.また,静電イオンエネルギーアナライザーの設計製作を行い,更にパルスラングミュアプローブ法を用いたイオンエネルギー分布関数の計測回路の設計・製作を行った.その結果,イオンエネルギー分布関数の高精度計測が可能であることを示した. 上述の計測系を用いて,生成したプラズマのパラメータ計測を行ったところ,2mTorr以下の低圧力領域において,磁力線が発散する領域において急激な電位降下が起こることを観測した.また,この電位降下の値はアルゴンガス圧を下げるに伴い上昇していくことを実験的に明らかにした.ここで観測される電位構造は,ダブルレイヤー形成及びボルツマン則に従う電位形成という両者の観点から検討した結果,ダブルレイヤー形成によって電位降下が起きていることを明確に示した.更に電位下降の下流側においてイオンエネルギー分布関数の計測を行い,ダブルレイヤー形成に伴う静電イオン加速が起きていることを明らかにした.
磁化プラズマ中電子サイクロトロン周波数帯左旋円偏波の伝搬・減衰機構の解明

高橋和貴

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別研究員奨励費

Category: 特別研究員奨励費

Institution: 東北大学

2004 - 2006

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前年度まで,不均一磁化プラズマ中で電子サイクロトロン共鳴(ECR)加熱を行った際に,ECR点近傍にダブルレイヤーと呼ばれる非線形電位構造が形成されることを明らかにし,方位角方向モード数m=+1,及びm=-1の電磁波を入射した際には,半径方向中心領域,及び周辺領域にそれぞれダブルレイヤーが形成されることを明らかにしている.本年度は,この電位構造形成機構と電子サイクロトロン波の伝搬機構を体系的に解明するために詳細な実験を行い,以下のことが明らかになった.また,ダブルレイヤー形成時における粒子ダイナミクスを解明するために,オーストラリア国立大学との共同研究を展開した. 1.方位角方向モード数m=±1モードを選択的に入射したところ,径方向偏波方向反転の結果,m=+1ではプラズマ断面の中心領域,m=-1では周辺領域のみで右旋偏波となり,この領域で選択的に波動が吸収されることが明らかになった. 2.上記1の波動吸収領域と,ダブルレイヤーが形成される位置が一致することを明らかにし,右旋偏波の領域のみでダブルレイヤーが形成されることを実験的に明らかにした. 3.上記1の波動伝搬特性は,実験室プラズマ中の境界条件を考慮した波動解析によって明確に説明できることを明らかにした.更に,有限要素法を用いたコンピューターシミュレーションにおいても同様の現象が起こることを明らかにした. 4.ヘリコン波プラズマ中にダブルレイヤーが形成される際の電子エネルギー分布関数(EEDF)計測に関して,海外の研究者と共同研究を展開し,パルスラングミュアプローブ法を用いた計測系の構築を達成した. 5.上記4の計測系を用いてEEDFの計測を行い,ダブルレイヤーが境界条件の一つとして振る舞い,高電位側と低電位側でEEDFが大きく異なることが観測された.高電位側ではEEDFはマクスウェル分布に従わず,ダブルレイヤーの電位障壁に対応するエネルギーにおいてマクスウェル分布からの逸脱が起こることが明らかになった. 以上の結果,磁化プラズマ中電子サイクロトロン波の伝搬機構と,電子サイクロトロン共鳴加熱に伴い形成される電位構造機構を体系的に解明し,マイクロ波入射モードによるプラズマ電位構造制御法を提唱することに成功した.更にヘリコン波プラズマ中ダブルレイヤー形成に関する粒子ダイナミクスに関する共同研究を行い,電子の振る舞いを明らかにした.

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Social Activities 3

プラズマ生成・制御～基礎研究から宇宙・地上応用大学は座学だけじゃない！~

2024/07/02 - 2024/07/02
プラズマ生成・制御～基礎研究から宇宙・地上応用大学は座学だけじゃない！~

2024/05/30 - 2024/05/30
出前講義

2013/12/05 -

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出前講義＠仙台２高

Media Coverage 35

無電極プラズマ宇宙推進機の性能向上に成功～大電力・長寿命電気推進による宇宙輸送技術の実現へ前進～ Myself

日刊工業新聞社　日刊工業新聞

2022/11/11

Type: Newspaper, magazine
惑星探査衛星に搭載長寿命電気エンジン

日本経済新聞社　日本経済新聞　https://www.nikkei.com/article/DGKKZO66471350Q0A121C2TJM000/

2020/11

Type: Newspaper, magazine
プラズマ電子冷却解明

日刊工業新聞社　日刊工業新聞

2020/11

Type: Newspaper, magazine
東北大、磁気ノズルを用いた無電極プラズマ推進機を開発

日本経済新聞社　日本経済新聞　https://r.nikkei.com/article/DGXLRSP542446_28102020000000?s=6

2020/10

Type: Internet
東北大、将来の宇宙用大推力電気推進エンジン「ヘリコンスラスタ」を開発中

マイナビニュース　マイナビニュース　https://news.mynavi.jp/article/20201030-1445534/

2020/10

Type: Internet
Explore a selection of 2019's highly downloaded research in Physics

Springer Nature　Explore a selection of 2019's highly downloaded research in Physics　https://www.springernature.com/jp/researchers/campaigns/highlights/physics

2019/03

Type: Internet
Man Made Space Debris are Threatening our Dreams of Conquering the Stars

Perfectly Plain　https://perfectly-plain.com/2019/02/25/space-junk-travel-science-problem/

2019/02

Type: Internet
Space debris can be cleaned up by the satellite engine

https://www.nikkei.com/article/DGXMZO37938810Z11C18A1XY0000/

2018/11

Type: Newspaper, magazine
Clean up space debris by using a plasma

NIKKEI Business Daily

2018/11

Type: Newspaper, magazine
space debris removal by an electrodeless plasma thruster

日刊工業新聞

2018/10

Type: Newspaper, magazine
A New Ion-Thruster Concept Could Make Space Habitable for Satellites Again

Engineering.com　https://www.engineering.com/DesignerEdge/DesignerEdgeArticles/ArticleID/17778/A-New-Ion-Thruster-Concept-Could-Make-Space-Habitable-for-Satellites-Again.aspx

2018/10

Type: Internet
SCIENTISTS WANT TO USE A PLASMA BEAM TO PUSH SPACE JUNK OUT OF ORBIT

Futurism　https://futurism.com/the-byte/space-junk-plasma-beam

2018/10

Type: Internet
Scientists propose blasting space junk out of orbit with powerful plasma beam

Big Think　https://bigthink.com/technology-innovation/how-much-space-debris-exists

2018/10

Type: Internet
New Solution to the Space Junk Problem – Burn it up with Plasma Beams

Technology Org　https://www.technology.org/2018/10/03/new-solution-to-the-space-junk-problem-burn-it-up-with-plasma-beams/

2018/10

Type: Internet
A New Solution to the Space Junk Problem. Spacecraft with Plasma Beams to Force Space Junk to Burn Up

University Today　https://www.universetoday.com/140120/a-new-solution-to-the-space-junk-problem-spacecraft-with-plasma-beams-to-force-space-junk-to-burn-up/

2018/10

Type: Internet
Plasma thruster: New space debris removal technology

Space daily　https://www.spacedaily.com/reports/Plasma_thruster_New_space_debris_removal_technology_999.html

2018/10

Type: Internet
Raumfahrt: Forscher wollen Weltraumschrott aus dem Orbit pusten

Trends der Zukunft　https://www.trendsderzukunft.de/raumfahrt-forscher-wollen-weltraumschrott-aus-dem-orbit-pusten/

2018/10

Type: Internet
Send up a satellite to zap space junk if you want Earth's orbit to be clean, say boffins

The Register　https://www.theregister.co.uk/2018/09/28/satellite_zaps_space_junk/

2018/09

Type: Internet
Two-way ion thruster could blow space junk out of orbit

New Atlas　https://newatlas.com/two-way-plasma-thruster-space-debris/56548/

2018/09

Type: Internet
Helicon Plasma Thruster: New Technology for Space Debris Removal

AZoQuantum　https://www.azoquantum.com/News.aspx?newsID=6175

2018/09

Type: Internet
Plasma thruster: New space debris removal technology

EurekAlert　https://www.eurekalert.org/pub_releases/2018-09/tu-ptn092718.php

2018/09

Type: Internet
Plasma thruster: New space debris removal technology

Phys Org　https://phys.org/news/2018-09-plasma-thruster-space-debris-technology.html

2018/09

Type: Internet
New Space Junk Solution Would Clean Up Debris With Ion Beams

Yahoo!　https://finance.yahoo.com/news/space-junk-solution-clean-debris-170300703.html

2018/09

Type: Internet
New Space Junk Solution Would Clean Up Debris With Ion Beams

Popular Mechanics　https://www.popularmechanics.com/space/satellites/a23490588/new-space-junk-removal-system/

2018/09

Type: Internet
Recreating outer space in the lab

Science Daily　https://www.sciencedaily.com/releases/2018/02/180214093853.htm

2018/02

Type: Internet
Recreating outer space in the lab: Extending thermodynamics to out of equilibrium electron gas in a magnetic nozzle

EurekAlert　https://www.eurekalert.org/pub_releases/2018-02/tu-ros021318.php

2018/02

Type: Internet
Recreating outer space in the lab

Space daily　https://www.spacedaily.com/reports/Recreating_outer_space_in_the_lab_999.html

2018/02

Type: Internet
Recreating outer space plasma systems in the lab

Phys Org　https://phys.org/news/2018-02-recreating-outer-space-plasma-lab.html

2018/02

Type: Internet
On the road to creating an electrodeless spacecraft propulsion engine

EurekAlert　https://www.eurekalert.org/pub_releases/2017-07/tu-otr070317.php

2017/07

Type: Internet
On the road to creating an electrodeless spacecraft propulsion engine

Science Daily　https://www.sciencedaily.com/releases/2017/06/170616121813.htm

2017/06

Type: Internet
On the road to creating an electrodeless spacecraft propulsion engine

Phys Org　https://phys.org/news/2017-06-road-electrodeless-spacecraft-propulsion.html

2017/06

Type: Internet
New plasma source favorable for hydrogen negative ion beam is developed

EurekAlert　https://www.eurekalert.org/pub_releases/2016-04/tu-nps040116.php

2016/04

Type: Internet
New plasma source favorable for hydrogen negative ion beam is developed

Phys Org　https://phys.org/news/2016-04-plasma-source-favorable-hydrogen-negative.html

2016/04

Type: Internet
Performance degradation mechanism of a helicon plasma thruster

EurekAlert　https://www.eurekalert.org/pub_releases/2015-05/tu-pdm051315.php

2015/05

Type: Internet
Performance degradation mechanism of a helicon plasma thruster

Phys Org　https://phys.org/news/2015-05-degradation-mechanism-helicon-plasma-thruster.html

2015/05

Type: Internet

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高密度・小型・高周波プラズマ技術の開発と宇宙・地上産業への応用

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高密度・小型・高周波プラズマ技術の開発と宇宙・地上産業への応用
半導体シールドパッケージ用の小型磁性体スパッタリング装置開発

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半導体シールドパッケージ用の小型磁性体スパッタリング装置開発
磁性材料高速スパッタ装置の開発と磁気デバイス応用

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磁性材料高速スパッタ装置の開発と磁気デバイス応用
ヘリコンプラズマによる小型高速TSVエッチャーの開発

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ヘリコンプラズマによる小型高速TSVエッチャーの開発を行う．
磁気ノズルヘリコンプラズマ宇宙推進機の学理と開発

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磁気ノズルヘリコンプラズマ宇宙推進機の学理と開発
高周波プラズマスラスタ中の中性粒子-プラズマ相互作用

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高周波プラズマスラスタ中の中性粒子-プラズマ相互作用に関する学術的研究を行う．
ミニマルプラズマ装置開発

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ミニマルプラズマ装置開発
高効率プラズマ生成装置の開発とミニマルエッチングプロセスへの応用

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東北大学でこれまでに開発してきた有磁場型の誘導結合性プラズマまたはヘリコンプラズマ源へエッチングガスであるSF6を導入し，Siウエハの高速反応性イオンエッチングに関する実験的研究を行う．ここでは，プラズマ生成へと投入された高周波電力の伝送効率の評価，各種プラズマパラメータの評価，Siウエハのエッチングレートの評価等を実施し，ミニマル装置における高速エッチングプロセス確立へ向けた基盤技術を確立する．
超高速小型エッチング装置の開発

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高密度プラズマ生成が可能な誘導結合性放電または軸方向磁場を印加したヘリコン波放電に収束型磁場を重畳することでプラズマの輸送効率を最大限に高め，基板付近のプラズマの高密度化を実現することで，超高速エッチングレートを達成することを目的としている．
磁気ノズルヘリコンプラズマ中の荷電粒子挙動解明と無電極電気推進機の開発

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磁気ノズルヘリコンプラズマ中の荷電粒子挙動解明と無電極電気推進機の開発を行う
無電極電気推進開発へ向けたヘリコンプラズマの磁気ノズル離脱現象

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無電極電気推進開発へ向けたヘリコンプラズマの磁気ノズル離脱現象に関する研究を行う
低気圧環境下での超高密度イオン生成技術の開発と電気推進への応用

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低気圧環境下での超高密度イオン生成技術の開発と電気推進への応用に関する研究を行う
磁気ノズルを用いたプラズマモーメント変換と電気推進機応用

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磁気ノズルを用いたプラズマモーメント変換と電気推進機応用に関して研究する．
小型・高速TSVプラズマエッチング装置の開発に関する研究

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小型・高速TSVプラズマエッチング装置の開発に関する研究を共同で行う．
ヘリコンプラズマを用いた無電極電気推進機の推力発生機構の解明

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ヘリコンプラズマを用いた無電極電気推進機の推力発生機構の解明を行う
無電極ヘリコンプラズマ推進機の開発

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無電極ヘリコンプラズマ推進機の開発
プラズマ物理・電気推進応用に関する研究

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プラズマ物理・電気推進応用に関する研究を行う
完全無電極プラズマ推進機の推力計測とモーメント解析

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完全無電極プラズマ推進機の推力計測とモーメント解析を行う．
プラズマ中無電極静電イオン加速の制御と長寿命イオンエンジンへの先進応用

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プラズマ中無電極静電イオン加速の制御と長寿命イオンエンジンへの先進応用を行う．
プラズマ中非線形電位構造による静電粒子加速の新型イオンエンジンへの展開

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プラズマ中非線形電位構造による静電粒子加速の新型イオンエンジンへの展開を行う．
無電極イオンビーム生成装置の開発と性能改善

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無電極イオンビーム生成装置の開発と性能改善を行う．
宇宙空間エネルギー開発に向けた電気推進機出力特性の長時間安定制御法の確立

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宇宙空間エネルギー開発に向けた電気推進機出力特性の長時間安定制御法の確立を行う．
磁気ノズルヘリコンプラズマの生成と応用

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磁気ノズルヘリコンプラズマの生成と応用に関する国際共同研究

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