Details of the Researcher

PHOTO

Yasuyuki Ogino
Section
Institute for Materials Research
Job title
Assistant Professor
Degree

  • 博士（エネルギー科学）（京都大学）

  • 修士（エネルギー科学）（京都大学）

Committee Memberships 1

  • 日本原子力学会 核融合工学部会　国際学術

    2023/04 - Present

Papers 20

  1. Effects of irradiation on interfacial strength and microstructure of double-layer mullite and alumina coating on SiC

    Taichi Miyagishi, Sosuke Kondo, Hirokazu Katsui, Kiyohiro Yabuuchi, Ryutaro Usukawa, Yasuyuki Ogino, Hao Yu, Ryuta Kasada

    Journal of Nuclear Materials　603　155410-155410　2025/01

    Publisher: Elsevier BV

    DOI： 10.1016/j.jnucmat.2024.155410 　

    ISSN： 0022-3115

  2. Effect of Molten Al/Si Impregnation on the Oxidation Resistance of TiB<inf>2</inf> at 1300°C

    Koki Wakatabi, Yuki Jimba, Yasuki Okuno, Sosuke Kondo, Hao Yu, Yasuyuki Ogino, Ryuta Kasada

    Materials Transactions　65　(10)　1367-1372　2024/10

    DOI： 10.2320/matertrans.MT-M2024012 　

    ISSN： 1345-9678

  3. The Role of Y2O3/Hf Co-Doping on the Microstructure and Tensile Properties of Alumina-Forming Co-Cr-Al-Ni ODS Superalloy Peer-reviewed

    Hao Yu, Sosuke Kondo, Yasuyuki Ogino, Ryuta Kasada

    Materials Transactions　65　(8)　867-875　2024/08

    DOI： 10.2320/matertrans.MT-M2024025 　

  4. Influence of the Hydrogen Isotope Affinity of the Cathode Coating Material on the Neutron Production Rate in the Glow Discharge–Type Fusion Neutron Source

    Toshiro Sakabe, Yasuyuki Ogino, Keisuke Mukai, Juro Yagi, Mahmoud Bakr

    Fusion Science and Technology　2024/07/03

    DOI： 10.1080/15361055.2023.2227821 　

  5. Lithium Isotope Enrichment Effects in Liquid Metal/Chloride Molten Salt System

    Ryo Ito, Fu Nomoto, Yasuyuki Ogino, Keisuke Mukai, Juro Yagi

    Fusion Science and Technology　2024/05/18

    DOI： 10.1080/15361055.2023.2229673 　

  6. Mechanism of enhanced room temperature ductility of cold–rolled tungsten under micro-bending test

    Xiangyu Wu, Yuki Jimba, Sosuke Kondo, Hao Yu, Yasuyuki Ogino, Akira Hasegawa, Ryuta Kasada

    Materialia　2024/03

    DOI： 10.1016/j.mtla.2023.101971 　

  7. Quenching factor measurement of low-energy Na recoils in ultra-pure NaI(Tl) crystal

    Yusuke Urano, Ken-Ichi Fushimi, Kazumi Hata, Yohei Kawai, Satoshi Konishi, Kenta Kotera, Shunsuke Kurosawa, Keisuke Mukai, Yasuyuki Ogino, Reiko Orito, Toshiro Sakabe

    Proceedings of XVIII International Conference on Topics in Astroparticle and Underground Physics — PoS(TAUP2023)　087-087　2024/02/09

    Publisher: Sissa Medialab

    DOI： 10.22323/1.441.0087 　

  8. Contribution of Y2O3/Hf co-doping to alumina scale growth on oxide dispersion strengthened Co-based superalloy Peer-reviewed

    Hao Yu, Ryuta Kasada, Koji Inoue, Sosuke Kondo, Yasuyuki Ogino, Shigeharu Ukai

    Corrosion Science　227　2024/02

    DOI： 10.1016/J.CORSCI.2023.111775 　

  9. Evaluation of Gamma‐Ray Dose Distribution in the Toroidal Direction of LHD Vacuum Vessel from Radionuclides Generated in Deuterium Plasma Experiments

    Yasuyuki Ogino, Makoto I. Kobayashi, Keisuke Mukai, Juro Yagi, Satoshi Konishi, Kunihiro Ogawa, Mitsutaka Isobe

    International Journal of Energy Research　2024/01/17

    DOI： 10.1155/2024/1550582 　

  10. High-strength TiB-TiB2 ceramics fabricated by low-temperature sintering with mechanically milled aids

    Yuki Jimba, Yasuki Okuno, Sosuke Kondo, Hao Yu, Yasuyuki Ogino, Shuhei Nogami, Ryuta Kasada

    Ceramics International　2023/11

    DOI： 10.1016/j.ceramint.2023.08.160 　

  11. Effects of grain boundary volume fraction on the threshold dose of irradiation-induced SiC amorphization at 30 °C

    Xinwei Yuan, Sosuke Kondo, Kiyohiro Yabuuchi, Hao Yu, Yasuyuki Ogino, Ryuta Kasada

    Journal of the European Ceramic Society　2023/09

    DOI： 10.1016/j.jeurceramsoc.2023.04.042 　

  12. Influence of electrodes' geometrical properties on the neutron production rate of a discharge fusion neutron source

    Mahmoud Bakr, Toshiro Sakabe, Jan-Philipp Wulfkuehler, Keisuke Mukai, T. W. Smith, Y. Ogino, Martin Tajmar, T. Scott, S. Konishi

    Physics of Plasmas　30　(3)　032701-032701　2023/03/06

    Publisher: {AIP} Publishing

    DOI： 10.1063/5.0134631 　

    ISSN： 1070-664X 1089-7674

    More details Close

    <jats:p> Trapping ions, such as deuterium and tritium, inside a potential well to generate neutrons is a well-established technology through electric and magnetic fields via the inertial electrostatic confinement fusion (IECF) and the tokamak, respectively. In the IECF, the straightforward configuration is a concentric cathode connected to a negative bias, surrounded by a grounded anode that serves as a vacuum vessel. Theoretically, neutrons are generated inside the vessel through fusion between ions that are accelerated by applying several tens kV voltage and tens mA current. Many parameters affect the plasma conditions and fusion in the system, hence the neutron production rate (NPR). This study investigates the cathode transparency and the number of apertures effect on NPR. For this end, eleven cathodes were fabricated from stainless steel in three different groups with different transparency and number of apertures. NPRs were investigated as a function of the cathode transparency and number of apertures at low power operating mode ∼1 kW. Experimental results revealed that higher NPR was produced from lower grid transparency and vice versa; this behavior was explained through beam–surface fusion with grid surface. In addition, a higher NPR was generated from the grid with many apertures; this was attributed to the effect of the deuterium ionization improvement by the number of ionizing electrons through the grid channels. </jats:p>

  13. Evaluation of equi-biaxial strength of thin sic coatings using ring-on-ring testing and digital image correlation

    Yasuyuki Ogino

    International Journal of Applied Ceramic Technology　2023

    DOI： 10.1111/IJAC.14553 　

  14. Measurements of Thermal and Epithermal Neutron Spatial Distribution Using Activation Foils Inside a Fusion Blanket Mock-Up

    Y. Ogino, S. Kenjo, T. Sakabe, K. Mukai, M. Bakr, J. Yagi, S. Konishi

    IEEE Transactions on Plasma Science　2023

    DOI： 10.1109/TPS.2023.3293708 　

  15. Effects of Metal Hydride Coatings at the Electrodes on Neutron Production Rate in a Discharge-Type Fusion Neutron Source

    T. Sakabe, S. Kenjo, Y. Ogino, K. Mukai, M. Bakr, J. Yagi, S. Konishi

    IEEE Transactions on Plasma Science　2022/11

    DOI： 10.1109/TPS.2022.3182723 　

  16. Employing of ZrCo as a fuel source in a discharge-type fusion neutron source operated in self-sufficient mode

    Shunsuke Kenjo, Yasuyuki Ogino, Keisuke Mukai, Mahmoud Bakr, Juro Yagi, Satoshi Konishi

    International Journal of Hydrogen Energy　47　(5)　3054-3062　2022/01

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.ijhydene.2021.10.250 　

    ISSN： 0360-3199

  17. Simulations for practical measurement methods of spatial neutron distribution inside blanket mock-up irradiated with DT neutrons

    Yasuyuki Ogino, Keisuke Mukai, Juro Yagi, Satoshi Konishi

    Fusion Engineering and Design　168　112417-112417　2021/07

    Publisher: Elsevier {BV}

    DOI： 10.1016/j.fusengdes.2021.112417 　

    ISSN： 0920-3796

  18. Evaluation of tritium production rate in a blanket mock-up using a compact fusion neutron source

    Keisuke Mukai, Yasuyuki Ogino, Makoto I. Kobayashi, Bakr Mahmoud, Juro Yagi, Kunihiro Ogawa, Mitsutaka Isobe, Satoshi Konishi

    Nuclear Fusion　61　(4)　046034-046034　2021/04/01

    Publisher: {IOP} Publishing

    DOI： 10.1088/1741-4326/abe4e7 　

    ISSN： 0029-5515 1741-4326

    More details Close

    <jats:title>Abstract</jats:title> <jats:p>We report a neutronics study of a blanket mock-up using a discharge-type compact fusion neutron source. Deuterium–deuterium fusion neutrons were irradiated to the mock-ups composed of tritium breeder and neutron reflector/moderator. The tritium production rate (TPR) per source neutron was measured by a single-crystal diamond detector with a <jats:sup>6</jats:sup>Li-enriched lithium fluoride film convertor after the calibration process. Despite the low neutron yield, energetic alpha and triton particles via <jats:sup>6</jats:sup>Li(n, t)<jats:italic>α</jats:italic> neutron capture as well as <jats:sup>12</jats:sup>C via elastic scattering were successfully detected by the SDD with high signal to noise ratios. The TPRs were experimentally evaluated with errors of 8.4%–8.5% at the 1<jats:italic>σ</jats:italic> level at the positions with high thermal neutron fluxes where the errors were dominantly introduced by uncertainties in the monitoring of the neutron production rate. The calculated to experimental (C/E) values of TPR were evaluated to be 0.91–1.27 (FENDL-2.1) and 0.94–1.28 (FENDL-3.1). As the neutron source can generate 14 MeV neutrons using a mixed gas of deuterium and tritium, this approach provides more opportunities for blanket neutronics experiments.</jats:p>

  19. 2-D Evaluation of Bred Tritium Using Neutron Imaging Plate

    K. Mukai, Y. Ogino, J. Yagi, S. Konishi

    IEEE Transactions on Plasma Science　48　(6)　1831-1835　2020/06

    Publisher: Institute of Electrical and Electronics Engineers ({IEEE})

    DOI： 10.1109/tps.2019.2955497 　

    ISSN： 0093-3813 1939-9375

  20. Preliminary Results of Neutron Transport in Blanket Module by MCNP with Profile Analysis Using Imaging Plate

    Yasuyuki Ogino, Keisuke Mukai, Juro Yagi, Satoshi Konishi

    Fusion Science and Technology　75　(6)　487-492　2019/08/18

    Publisher: Informa {UK} Limited

    DOI： 10.1080/15361055.2019.1611343 　

    ISSN： 1536-1055 1943-7641

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