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Akira Ono

Section

Graduate School of Science

Job title

Assistant Professor

Degree

博士（理学）（京都大学）
修士（理学）（京都大学）

researchmap

https://researchmap.jp/read0046780

J-GLOBAL ID

200901080936451200

Research History 4

2007/04 - Present

Tohoku University　Graduate School of Science　Assistant Professor
1996/03 - 2007/03

Tohoku University　Graduate School of Science　Assistant Professor
1995/04 - 1996/02

RIKEN　Cyclotron Laboratory　Sepcial Researcher of Fundamental Science
1992/04 - 1995/03

Japan Society for the Promotion of Science　Special Resarcher (DC)

Education 2

Kyoto University　Graduate School of Science　Physics Department II

1990/04 - 1995/03
Kyoto University　Faculty of Science

1986/04 - 1990/03

Professional Memberships 1

日本物理学会

Research Interests 4

Transport models
Antisymmetrized Molecular Dynamics
Heavy Ion Collisions
Nuclear Reactions

Research Areas 1

Natural sciences / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics /

Awards 2

Outstanding Referee

2024/03　American Physical Society
日本物理学会論文賞

1996/04　日本物理学会

Papers 124

Activation of momentum fluctuations in wave packet molecular dynamics: Impacts on momentum distributions of projectile-like fragments International-journal International-coauthorship Peer-reviewed

Lei Shen, Akira Ono, Yu-Gang Ma

Physical Review C　110　(6)　064611-1-17　2024/12/17

DOI： 10.1103/PhysRevC.110.064611 　
Isospin diffusion from 40,48Ca + 40,48Ca experimental data at Fermi energies: Direct comparisons with transport model calculations International-journal International-coauthorship Peer-reviewed

Quentin Fable, L. Baldesi, S. Barlini, E. Bonnet, B. Borderie, R. Bougault, A. Camaiani, G. Casini, A. Chbihi, C. Ciampi, J. A. Dueñas, J. D. Frankland, T. Génard, D. Gruyer, M. Henri, B. Hong, S. Kim, A. J. Kordyasz, T. Kozik, A. Le Fèvre, N. Le Neindre, I. Lombardo, O. Lopez, T. Marchi, P. Marini, S. H. Nam, A. Ono, J. Park, M. Pârlog, S. Piantelli, A. Rebillard-Soulié, G. Verde, E. Vient, INDRA and INDRA-FAZIA Collaborations

Physical Review C　109　(6)　064605-1-19　2024/06/04
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.109.064605 　

ISSN： 2469-9985

eISSN： 2469-9993
Comparing pion production in transport simulations of heavy-ion collisions at 270A MeV under controlled conditions Peer-reviewed

Jun Xu, Hermann Wolter, Maria Colonna, Mircea Dan Cozma, Pawel Danielewicz, Che Ming Ko, Akira Ono, ManYee Betty Tsang, Ying-Xun Zhang, Hui-Gan Cheng, Natsumi Ikeno, Rohit Kumar, Jun Su, Hua Zheng, Zhen Zhang, Lie-Wen Chen, Zhao-Qing Feng, Christoph Hartnack, Arnaud Le Fèvre, Bao-An Li, Yasushi Nara, Akira Ohnishi, Feng-Shou Zhang

Physical Review C　109　(4)　044609-1-34　2024/04/05
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.109.044609 　

ISSN： 2469-9985

eISSN： 2469-9993
Mean-field dependence of fragment-production cross sections in heavy-ion induced reactions calculated by antisymmetrized molecular dynamics Peer-reviewed

Yuta Mukobara, Toshiya Sanami, Akira Ono, Tsunenori Inakura, Tastuya Katabuchi, Satoshi Chiba, Chikako Ishizuka

Journal of Nuclear Science and Technology　61　206-217　2024/02/05
Publisher: Informa UK Limited
DOI： 10.1080/00223131.2023.2287102 　

ISSN： 0022-3131

eISSN： 1881-1248
Collision integral with momentum-dependent potentials and its impact on pion production in heavy-ion collisions International-journal Peer-reviewed

Natsumi Ikeno, Akira Ono

Physical Review C　108　(4)　044601-1-18　2023/10/02
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.108.044601 　

ISSN： 2469-9985

eISSN： 2469-9993
Examination of cluster production in excited light systems at Fermi energies from new experimental data and comparison with transport model calculations Peer-reviewed

Catalin Frosin, S. Piantelli, G. Casini, A. Ono, A. Camaiani, L. Baldesi, S. Barlini, B. Borderie, R. Bougault, C. Ciampi, M. Cicerchia, A. Chbihi, D. Dell'Aquila, J. A. Dueñas, D. Fabris, Q. Fable, J. D. Frankland, T. Génard, F. Gramegna, D. Gruyer, M. Henri, B. Hong, M. J. Kweon, S. Kim, A. Kordyasz, T. Kozik, I. Lombardo, O. Lopez, T. Marchi, K. Mazurek, S. H. Nam, J. Lemarié, N. LeNeindre, P. Ottanelli, M. Parlog, J. Park, G. Pasquali, G. Poggi, A. Rebillard-Soulié, B. H. Sun, A. A. Stefanini, S. Terashima, S. Upadhyaya, S. Valdré, G. Verde, E. Vient, M. Vigilante, INDRA-FAZIA Collaboration

Physical Review C　107　(4)　044614-1-14　2023/04/28
Publisher: American Physical Society ({APS})
DOI： 10.1103/physrevc.107.044614 　

ISSN： 2469-9985 2469-9993
Isoscaling in central Sn+Sn collisions at 270 MeV/u Peer-reviewed

J. W. Lee, M. B. Tsang, C. Y. Tsang, R. Wang, J. Barney, J. Estee, T. Isobe, M. Kaneko, M. Kurata-Nishimura, W. G. Lynch, T. Murakami, A. Ono, S. R. Souza, D. S. Ahn, L. Atar, T. Aumann, H. Baba, K. Boretzky, J. Brzychczyk, G. Cerizza, N. Chiga, N. Fukuda, I. Gasparic, B. Hong, A. Horvat, K. Ieki, N. Ikeno, N. Inabe, G. Jhang, Y. J. Kim, T. Kobayashi, Y. Kondo, P. Lasko, H. S. Lee, Y. Leifels, J. Łukasik, J. Manfredi, A. B. McIntosh, P. Morfouace, T. Nakamura, N. Nakatsuka, S. Nishimura, H. Otsu, P. Pawłowski, K. Pelczar, D. Rossi, H. Sakurai, C. Santamaria, H. Sato, H. Scheit, R. Shane, Y. Shimizu, H. Simon, A. Snoch, A. Sochocka, T. Sumikama, H. Suzuki, D. Suzuki, H. Takeda, S. Tangwancharoen, Y. Togano, Z. G. Xiao, S. J. Yennello, Y. Zhang, (the S π RIT collaboration)

The European Physical Journal A　58　(10)　201-1-10　2022/10/21
Publisher: Springer Science and Business Media LLC
DOI： 10.1140/epja/s10050-022-00851-2 　

ISSN： 1434-601X

eISSN： 1434-601X
Transport model comparison studies of intermediate-energy heavy-ion collisions Peer-reviewed

Hermann Wolter, Maria Colonna, Dan Cozma, Pawel Danielewicz, Che Ming Ko, Rohit Kumar, Akira Ono, ManYee Betty Tsang, Jun Xu, Ying-Xun Zhang, Elena Bratkovskaya, Zhao-Qing Feng, Theodoros Gaitanos, Arnaud Le Fèvre, Natsumi Ikeno, Youngman Kim, Swagata Mallik, Paolo Napolitani, Dmytro Oliinychenko, Tatsuhiko Ogawa, Massimo Papa, Jun Su, Rui Wang, Yong-Jia Wang, Janus Weil, Feng-Shou Zhang, Guo-Qiang Zhang, Zhen Zhang, Joerg Aichelin, Wolfgang Cassing, Lie-Wen Chen, Hui-Gan Cheng, Hannah Elfner, K. Gallmeister, Christoph Hartnack, Shintaro Hashimoto, Sangyong Jeon, Kyungil Kim, Myungkuk Kim, Bao-An Li, Chang-Hwan Lee, Qing-Feng Li, Zhu-Xia Li, Ulrich Mosel, Yasushi Nara, Koji Niita, Akira Ohnishi, Tatsuhiko Sato, Taesoo Song, Agnieszka Sorensen, Ning Wang, Wen-Jie Xie

Progress in Particle and Nuclear Physics　125　103962-1-90　2022/07
Publisher: Elsevier BV
DOI： 10.1016/j.ppnp.2022.103962 　

ISSN： 0146-6410
Role of tensor interaction as salvation of cluster structure in 44Ti Peer-reviewed

Chikako Ishizuka, Hiroki Takemoto, Yohei Chiba, Akira Ono, Naoyuki Itagaki

Physical Review C　105　(6)　064314-1-6　2022/06/24

DOI： 10.1103/PhysRevC.105.064314 　

ISSN： 2469-9985

eISSN： 2469-9993
Phase-space consideration on barrier transmission in a time-dependent variational approach with superposed wave packets Peer-reviewed

Akira Ono

Physics Letters B　826　136931-1-7　2022/03
Publisher: Elsevier BV
DOI： 10.1016/j.physletb.2022.136931 　

ISSN： 0370-2693
Reply to Comment on "Phase-space consideration on barrier transmission in a time-dependent variational approach with superposed wave packets"

Akira Ono

2022/02/14

DOI： 10.48550/arXiv.2202.06454 　

More details Close

In the paper by Hasegawa, Hagino and Tanimura (HHT) [Phys. Lett. B 808 (2020) 135693, arXiv:2006.06944], they concluded that quantum tunneling was simulated by a time-dependent generator coordinate method (TDGCM). In contrast, difficulties of TDGCM in describing quantum tunneling were pointed out by Ono in the paper [Phys. Lett. B 826 (2022) 136931, arXiv:2201.02966]. Recently, HHT submitted a comment [arXiv:2202.00513v1], by which they appear to give some counterarguments to Ono's paper. Here I examine their arguments, reviewing the main points of Ono's paper. The confusion in HHT's arguments may be mostly resolved by recognizing how the wave packets interfere with each other when they are coherently superposed.
Rapidity distributions of Z = 1 isotopes and the nuclear symmetry energy from Sn+Sn collisions with radioactive beams at 270 MeV/nucleon Peer-reviewed

M. Kaneko, T. Murakami, T. Isobe, M. Kurata-Nishimura, A. Ono, N. Ikeno, J. Barney, G. Cerizza, J. Estee, G. Jhang, J.W. Lee, W.G. Lynch, C. Santamaria, C.Y. Tsang, M.B. Tsang, R. Wang, D.S. Ahn, L. Atar, T. Aumann, H. Baba, K. Boretzky, J. Brzychczyk, N. Chiga, N. Fukuda, I. Gašparić, B. Hong, A. Horvat, T. Ichihara, K. Ieki, N. Inabe, Y.J. Kim, T. Kobayashi, Y. Kondo, P. Lasko, H.S. Lee, Y. Leifels, J. Łukasik, J. Manfredi, A.B. McIntosh, P. Morfouace, T. Nakamura, N. Nakatsuka, S. Nishimura, R. Olsen, H. Otsu, P. Pawłowski, K. Pelczar, D. Rossi, H. Sakurai, H. Sato, H. Scheit, R. Shane, Y. Shimizu, H. Simon, T. Sumikama, D. Suzuki, H. Suzuki, H. Takeda, S. Tangwancharoen, Y. Togano, H. Törnqvist, Z. Xiao, S.J. Yennello, J. Yurkon, Y. Zhang

Physics Letters B　822　136681-1-8　2021/11
Publisher: Elsevier BV
DOI： 10.1016/j.physletb.2021.136681 　

ISSN： 0370-2693
Comparison of heavy-ion transport simulations: Mean-field dynamics in a box Peer-reviewed

Maria Colonna, Ying-Xun Zhang, Yong-Jia Wang, Dan Cozma, Pawel Danielewicz, Che Ming Ko, Akira Ono, Manyee Betty Tsang, Rui Wang, Hermann Wolter, Jun Xu, Zhen Zhang, Lie-Wen Chen, Hui-Gan Cheng, Hannah Elfner, Zhao-Qing Feng, Myungkuk Kim, Youngman Kim, Sangyong Jeon, Chang-Hwan Lee, Bao-An Li, Qing-Feng Li, Zhu-Xia Li, Swagata Mallik, Dmytro Oliinychenko, Jun Su, Taesoo Song, Agnieszka Sorensen, Feng-Shou Zhang

Physical Review C　104　(2)　2021/08/05
Publisher: American Physical Society ({APS})
DOI： 10.1103/physrevc.104.024603 　

ISSN： 2469-9985 2469-9993
Symmetry energy investigation with pion production from Sn+Sn systems Peer-reviewed

G. Jhang, J. Estee, J. Barney, G. Cerizza, M. Kaneko, J.W. Lee, W.G. Lynch, T. Isobe, M. Kurata-Nishimura, T. Murakami, C.Y. Tsang, M.B. Tsang, R. Wang, D.S. Ahn, L. Atar, T. Aumann, H. Baba, K. Boretzky, J. Brzychczyk, N. Chiga, N. Fukuda, I. Gasparic, B. Hong, A. Horvat, K. Ieki, N. Inabe, Y.J. Kim, T. Kobayashi, Y. Kondo, P. Lasko, H.S. Lee, Y. Leifels, J. Łukasik, J. Manfredi, A.B. McIntosh, P. Morfouace, T. Nakamura, N. Nakatsuka, S. Nishimura, R. Olsen, H. Otsu, P. Pawłowski, K. Pelczar, D. Rossi, H. Sakurai, C. Santamaria, H. Sato, H. Scheit, R. Shane, Y. Shimizu, H. Simon, A. Snoch, A. Sochocka, Z. Sosin, T. Sumikama, H. Suzuki, D. Suzuki, H. Takeda, S. Tangwancharoen, H. Toernqvist, Y. Togano, Z.G. Xiao, S.J. Yennello, J. Yurkon, Y. Zhang, Maria Colonna, Dan Cozma, Paweł Danielewicz, Hannah Elfner, Natsumi Ikeno, Che Ming Ko, Justin Mohs, Dmytro Oliinychenko, Akira Ono, Jun Su, Yong Jia Wang, Hermann Wolter, Jun Xu, Ying-Xun Zhang, Zhen Zhang

Physics Letters B　813　136016-1-136016-7　2021/02/10
Publisher: Elsevier BV
DOI： 10.1016/j.physletb.2020.136016 　

ISSN： 0370-2693
Isospin transport phenomena for the systems Kr80+Ca40,48 at 35 MeV/nucleon Peer-reviewed

S. Piantelli, G. Casini, A. Ono, G. Poggi, G. Pastore, S. Barlini, M. Bini, A. Boiano, E. Bonnet, B. Borderie, R. Bougault, M. Bruno, A. Buccola, A. Camaiani, A. Chbihi, C. Ciampi, M. Cicerchia, M. Cinausero, M. Degerlier, J. A. Dueñas, Q. Fable, D. Fabris, J. D. Frankland, C. Frosin, F. Gramegna, D. Gruyer, A. Kordyasz, T. Kozik, J. Lemarié, N. Le Neindre, I. Lombardo, O. Lopez, G. Mantovani, T. Marchi, M. Henri, L. Morelli, A. Olmi, P. Ottanelli, M. Pârlog, G. Pasquali, J. Quicray, A. A. Stefanini, G. Tortone, S. Upadhyaya, S. Valdré, G. Verde, E. Vient, M. Vigilante

Physical Review C　103　(1)　014603-1-014603-13　2021/01/08
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.103.014603 　

ISSN： 2469-9985

eISSN： 2469-9993
Isospin diffusion measurement from the direct detection of a quasiprojectile remnant Peer-reviewed

A. Camaiani, G. Casini, S. Piantelli, A. Ono, E. Bonnet, R. Alba, S. Barlini, B. Borderie, R. Bougault, C. Ciampi, A. Chbihi, M. Cicerchia, M. Cinausero, J. A. Dueñas, D. Dell'Aquila, Q. Fable, D. Fabris, C. Frosin, J. D. Frankland, F. Gramegna, D. Gruyer, K. I. Hahn, M. Henri, B. Hong, S. Kim, A. Kordyasz, M. J. Kweon, H. J. Lee, J. Lemarié, N. LeNeindre, I. Lombardo, O. Lopez, T. Marchi, S. H. Nam, P. Ottanelli, M. Parlog, G. Pasquali, G. Poggi, J. Quicray, A. A. Stefanini, S. Upadhyaya, S. Valdré, E. Vient

Physical Review C　103　(1)　014605-1-014605-13　2021/01/08
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.103.014605 　

ISSN： 2469-9985

eISSN： 2469-9993
Effects of cluster correlations on fragment emission in C12+C12 at 50 MeV/nucleon Peer-reviewed

R. Han, Z. Chen, R. Wada, A. Ono, G. Tian, F. Shi, X. Zhang, B. Liu, H. Sun

Physical Review C　97　(3)　034610-1-034610-12　2020/12/18
Publisher: American Physical Society
DOI： 10.1103/PhysRevC.102.064617 　

ISSN： 2469-9993 2469-9985
Influence of fast emissions and statistical de-excitation on the isospin transport ratio Peer-reviewed

A. Camaiani, S. Piantelli, A. Ono, G. Casini, B. Borderie, R. Bougault, C. Ciampi, J. A. Dueñas, C. Frosin, J. D. Frankland, D. Gruyer, N. LeNeindre, I. Lombardo, G. Mantovani, P. Ottanelli, M. Parlog, G. Pasquali, S. Upadhyaya, S. Valdré, G. Verde, E. Vient

Physical Review C　102　(4)　044607-1-044607-9　2020/10/09
Publisher: American Physical Society (APS)
DOI： 10.1103/PhysRevC.102.044607 　

ISSN： 2469-9985

eISSN： 2469-9993
Neutron–Proton Dynamics and Pion Production in Heavy-ion Collisions by the AMD+JAM Approach Peer-reviewed

Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi

JPS Conference Proceedings　32　010067-1-010067-4　2020/07/16
Publisher: Journal of the Physical Society of Japan
DOI： 10.7566/jpscp.32.010067 　
Impacts of Cluster Correlations on Heavy-Ion Collision Dynamics Peer-reviewed

Akira Ono

JPS Conference Proceedings　32　010076-1-010076-4　2020/07/16

DOI： 10.7566/jpscp.32.010076 　
Dynamical fission of the quasiprojectile and isospin equilibration for the system Kr80+Ca48 at 35 MeV/nucleon Peer-reviewed

S. Piantelli, G. Casini, A. Ono, G. Poggi, G. Pastore, S. Barlini, A. Boiano, E. Bonnet, B. Borderie, R. Bougault, M. Bruno, A. Buccola, A. Camaiani, A. Chbihi, M. Cicerchia, M. Cinausero, M. D'Agostino, M. Degerlier, J. A. Dueñas, Q. Fable, D. Fabris, J. D. Frankland, C. Frosin, F. Gramegna, D. Gruyer, M. Henri, A. Kordyasz, T. Kozik, N. Le Neindre, I. Lombardo, O. Lopez, G. Mantovani, T. Marchi, L. Morelli, A. Olmi, P. Ottanelli, M. Pârlog, G. Pasquali, A. A. Stefanini, G. Tortone, S. Upadhyaya, S. Valdré, G. Verde, E. Vient, M. Vigilante, R. Alba, C. Maiolino

Physical Review C　101　(3)　034613-1-034613-12　2020/03/24
Publisher: American Physical Society (APS)
DOI： 10.1103/physrevc.101.034613 　

ISSN： 2469-9985

eISSN： 2469-9993
Effects of Pauli blocking on pion production in central collisions of neutron-rich nuclei International-journal Peer-reviewed

Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi

Physical Review C　101　(3)　034607-1-034607-9　2020/03/13

DOI： 10.1103/PhysRevC.101.034607 　

ISSN： 2469-9985

eISSN： 2469-9993
Comparison of heavy-ion transport simulations: Collision integral with pions and Δ resonances in a box International-journal Peer-reviewed

Akira Ono, Jun Xu, Maria Colonna, Pawel Danielewicz, Che Ming Ko, Manyee Betty Tsang, Yong-Jia Wang, Hermann Wolter, Ying-Xun Zhang, Lie-Wen Chen, Dan Cozma, Hannah Elfner, Zhao-Qing Feng, Natsumi Ikeno, Bao-An Li, Swagata Mallik, Yasushi Nara, Tatsuhiko Ogawa, Akira Ohnishi, Dmytro Oliinychenko, Jun Su, Taesoo Song, Feng-Shou Zhang, Zhen Zhang

Physical Review C　100　(4)　044617-1-044617-35　2019/10

DOI： 10.1103/physrevc.100.044617 　

ISSN： 2469-9985

eISSN： 2469-9993
Dynamics of clusters and fragments in heavy-ion collisions Invited Peer-reviewed

Akira Ono

Progress in Particle and Nuclear Physics　105　139-179　2019/03
Publisher: Elsevier BV
DOI： 10.1016/j.ppnp.2018.11.001 　

ISSN： 0146-6410
Lights and (some) shadows in the comparison among experimental data of heavy ion collisionat Fermi energies and the dynamical model AMD

Silvia Piantelli, Alessandro Olmi, Paolo R. Maurenzig, Akira Ono, Maurizio Bini, Giovanni Casini, Alessio Mangiarotti, Gabriele Pasquali, Giacomo Poggi, Andrea Stefanini, Sandro Barlini, Alberto Camaiani, Caterina Ciampi, Catalin Frosin, Pietro Ottanelli, Simone Valdré

EPJ Web of Conferences　223　01050-01050　2019
Publisher: EDP Sciences
DOI： 10.1051/epjconf/201922301050 　

ISSN： 2100-014X

eISSN： 2100-014X

More details Close

The simulation of heavy ion collisions in the Fermi energy region is a challenge for the theoretical models; in particular it is difficult to obtain a coherent description in all the impact parameter range and to reproduce all the experimental observables. In this contribution we will show the very good job done by the dynamical model AMD [1] followed by the statistical code GEMINI [2, 3] as an afterburner. The model is able to reproduce the main characteristics of peripheral and semiperipheral collisions, although some discrepancies still persist.
Comparison between calculations with the AMD code and experimental data for peripheral collisions of Nb 93 + 93Nb,116Sn at 38 MeV/nucleon International-journal Peer-reviewed

Piantelli, S., Olmi, A., Maurenzig, P.R., Ono, A., Bini, M., Casini, G., Pasquali, G., Mangiarotti, A., Poggi, G., Stefanini, A.A., Barlini, S., Camaiani, A., Ciampi, C., Frosin, C., Ottanelli, P., Valdré, S.

Physical Review C　99　(6)　064616-1-064616-16　2019

DOI： 10.1103/PhysRevC.99.064616 　
Comparison of heavy-ion transport simulations: Collision integral in a box Peer-reviewed

Zhang, Y.-X., Wang, Y.-J., Colonna, M., Danielewicz, P., Ono, A., Tsang, M.B., Wolter, H., Xu, J., Chen, L.-W., Cozma, D., Feng, Z.-Q., Das Gupta, S., Ikeno, N., Ko, C.-M., Li, B.-A., Li, Q.-F., Li, Z.-X., Mallik, S., Nara, Y., Ogawa, T., Ohnishi, A., Oliinychenko, D., Papa, M., Petersen, H., Su, J., Song, T., Weil, J., Wang, N., Zhang, F.-S., Zhang, Z.

Physical Review C　97　(3)　034625-1-034625-20　2018

DOI： 10.1103/PhysRevC.97.034625 　

ISSN： 2469-9985

eISSN： 2469-9993
Erratum: Probing neutron-proton dynamics by pions (Physical Review C (2016) 93 (044612) DOI: 10.1103/PhysRevC.93.044612) Peer-reviewed

Ikeno, N., Ono, A., Nara, Y., Ohnishi, A.

Physical Review C　97　(6)　069902(E)-1-069902(E)-5　2018

DOI： 10.1103/PhysRevC.97.069902 　
Pre-equilibrium emission to study clustering in nuclei Peer-reviewed

D. Fabris, F. Gramegna, M. Cicerchia, T. Marchi, S. Barlini, S. Piantelli, M. Bini, M. Bruno, G. Casini, M. Cinausero, M. D'Agostino, M. Degerlier, N. Gelli, G. Mantovani, L. Morelli, J. Mabiala, A. Olmi, G. Pasquali, G. Poggi, S. Valdré, E. Vardaci, O. V. Fotina, V. L. Kravchuk, M. Colonna, A. Ono

EPJ Web of Conferences　163　00016-1-00016-5　2017/11/22
Publisher: EDP Sciences
DOI： 10.1051/epjconf/201716300016 　

ISSN： 2100-014X 2101-6275
Clustering in light nuclei and their effects on fusion and pre - Equilibrium processes. Peer-reviewed

Fabiana Gramegna, Magda Cicerchia, Daniela Fabris, Tommaso Marchi, Marco Cinausero, Meltem Degerlier, Justin Mabiala, Giorgia Mantovani, Luca Morelli, Michela D'Agostino, Mauro Bruno, Sandro Barlini, Maurizio Bini, Gabriele Pasquali, Silvia Piantelli, Giovanni Casini, Giuseppe Pastore, Diego Gruyer, Pietro Ottanelli, Simone Valdré, Nicla Gelli, Alessandro Olmi, Giacomo Poggi, Emanuele Vardaci, Ivano Lombardo, Daniele Dell'Aquila, Silvia Leoni, Natalya Cieplicka-Orynczak, Bogdan Fornal, Daniele Mengoni, Gianmaria Collazuol, Antonio Caciolli, Maria Colonna, Akira Ono, Giorgio Baiocco

EPJ Web of Conferences　163　00020-1-00020-6　2017/11/22
Publisher: EDP Sciences
DOI： 10.1051/epjconf/201716300020 　

ISSN： 2100-014X 2101-6275
22aAB-10 Nucleon dynamics and pion production in heavy-ion collisions

Ikeno N., Ono A., Nara Y., Ohnishi A.

Meeting Abstracts of the Physical Society of Japan　71　246-246　2016
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.71.1.0_246 　

ISSN： 2189-079X
Understanding transport simulations of heavy-ion collisions at 100A and 400A MeV: Comparison of heavy-ion transport codes under controlled conditions Peer-reviewed

Xu, J., Chen, L.-W., Tsang, M.B., Wolter, H., Zhang, Y.-X., Aichelin, J., Colonna, M., Cozma, D., Danielewicz, P., Feng, Z.-Q., Le Fèvre, A., Gaitanos, T., Hartnack, C., Kim, K., Kim, Y., Ko, C.-M., Li, B.-A., Li, Q.-F., Li, Z.-X., Napolitani, P., Ono, A., Papa, M., Song, T., Su, J., Tian, J.-L., Wang, N., Wang, Y.-J., Weil, J., Xie, W.-J., Zhang, F.-S., Zhang, G.-Q.

Physical Review C　93　(4)　044609　2016

DOI： 10.1103/PhysRevC.93.044609 　

ISSN： 2469-9985

eISSN： 2469-9993
Probing neutron-proton dynamics by pions Peer-reviewed

Ikeno, N., Ono, A., Nara, Y., Ohnishi, A.

Physical Review C　93　(4)　044612　2016

DOI： 10.1103/PhysRevC.93.044612 　

ISSN： 2469-9985

eISSN： 2469-9993
Cluster production within transport theory Peer-reviewed

Akira Ono

12TH INTERNATIONAL CONFERENCE ON NUCLEUS-NUCLEUS COLLISIONS 2015　117　07003-1-07003-10　2016

DOI： 10.1051/epjconf/201611707003 　

ISSN： 2100-014X
Cluster production within antisymmetrized molecular dynamics Peer-reviewed

Akira Ono

CNR*15 - 5TH INTERNATIONAL WORKSHOP ON COMPOUND-NUCLEAR REACTIONS AND RELATED TOPICS　122　11001-1-11001-14　2016

DOI： 10.1051/epjconf/201612211001 　

ISSN： 2100-014X
Dynamics of light clusters in fragmentation reactions Peer-reviewed

Ono, A.

Nuovo Cimento della Societa Italiana di Fisica C　39　(6)　390-1-390-11　2016
Publisher: Editrice Compositori s.r.l.
DOI： 10.1393/ncc/i2016-16390-x 　

ISSN： 1826-9885 2037-4909
Velocity-dependent transverse momentum distribution of fragments produced from 40Ar + 9Be at 95 MeV/nucleon

S. Momota, I. Tanihata, A. Ozawa, M. Notani, K. Yoshida, K. Morimoto, T. Yamaguchi, T. Onishi, A. Yoshida, Y. X. Watanabe, Z. Liu, A. Ono

Physical Review C - Nuclear Physics　92　(2)　2015/08/10

DOI： 10.1103/PhysRevC.92.024608 　

ISSN： 1089-490X 0556-2813

eISSN： 2469-9993
Velocity-dependent transverse momentum distribution of fragments produced from ^<40>Ar+^9Be at 95 MeV/nucleon

Momota S., Tanihata I., Ozawa A., Notani M., Yoshida K., Morimoto K., Yamaguchi T., Onishi T., Yoshida A., Watanabe Y. X., Liu Z., Ono A.

Physical Review C　92　(2)　24608-1-024608-15　2015/08
Publisher: American Physical Society
DOI： 10.1103/PhysRevC.92.024608 　

ISSN： 2469-9985
21pCB-5 Effects of high-density symmetry energy in heavy-ion collisions

Ono A., Ikeno N.

Meeting Abstracts of the Physical Society of Japan　70　135-135　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_135 　

ISSN： 2189-079X
21pCB-6 Analysis of pion production in heavy-ion collisions by a transport model

Ikeno N., Ono A., Nara Y., Ohnishi A.

Meeting Abstracts of the Physical Society of Japan　70　136-136　2015
Publisher: The Physical Society of Japan (JPS)
DOI： 10.11316/jpsgaiyo.70.1.0_136 　

ISSN： 2189-079X
A way forward in the study of the symmetry energy: Experiment, theory, and observation Peer-reviewed

Horowitz, C.J., Brown, E.F., Kim, Y., Lynch, W.G., Michaels, R., Ono, A., Piekarewicz, J., Tsang, M.B., Wolter, H.H.

Journal of Physics G: Nuclear and Particle Physics　41　(9)　093001　2014

DOI： 10.1088/0954-3899/41/9/093001 　

ISSN： 0954-3899

eISSN： 1361-6471
Fragmentation in nuclear reaction and its relation to EOS Peer-reviewed

Akira Ono

3RD INTERNATIONAL WORKSHOP ON STATE OF THE ART IN NUCLEAR CLUSTER PHYSICS　569　(1)　012086　2014

DOI： 10.1088/1742-6596/569/1/012086 　

ISSN： 1742-6588
Cluster correlations in multifragmentation Peer-reviewed

Akira Ono

Journal of Physics: Conference Series　420　(1)　012103　2013
Publisher: Institute of Physics Publishing
DOI： 10.1088/1742-6596/420/1/012103 　

ISSN： 1742-6596 1742-6588
Nuclear matter properties in fragmentation reactions Peer-reviewed

Akira Ono

10TH INTERNATIONAL CONFERENCE ON CLUSTERING ASPECTS OF NUCLEAR STRUCTURE AND DYNAMICS (CLUSTER'12)　436　(1)　012068　2013

DOI： 10.1088/1742-6596/436/1/012068 　

ISSN： 1742-6588
Interplay between collision dynamics and nuclear matter properties from microscopic viewpoint Invited Peer-reviewed

Akira Ono

IWM2011 - INTERNATIONAL WORKSHOP ON MULTIFRAGMENTATION AND RELATED TOPICS　31　00023　2012

DOI： 10.1051/epjconf/20123100023 　

ISSN： 2100-014X
Antisymmetrized molecular dynamics and its applications to cluster phenomena Peer-reviewed

Kanada-En'Yo, Y., Kimura, M., Ono, A.

Progress of Theoretical and Experimental Physics　2012　(1)　01A202　2012

DOI： 10.1093/ptep/pts001 　

ISSN： 2050-3911
Relevance of equilibrium in multifragmentation Peer-reviewed

Furuta, T., Ono, A.

Nuclear Physics A　834　(1-4)　555C-557C　2010

DOI： 10.1016/j.nuclphysa.2010.01.089 　

ISSN： 0375-9474
Monopole oscillations in light nuclei with a molecular dynamics approach Peer-reviewed

Furuta, T., Hasnaoui, K.H.O., Gulminelli, F., Leclercq, C., Ono, A.

Physical Review C - Nuclear Physics　82　(3)　034307-(10 pages)　2010

DOI： 10.1103/PhysRevC.82.034307 　

ISSN： 2469-9985

eISSN： 2469-9993
Fragmentation paths in dynamical models Peer-reviewed

Colonna, M., Ono, A., Rizzo, J.

Physical Review C - Nuclear Physics　82　(5)　054613-(10 pages)　2010

DOI： 10.1103/PhysRevC.82.054613 　

ISSN： 0556-2813

eISSN： 1089-490X
RELEVANCE OF EQUILIBRIUM IN MULTIFRAGMENTATION Peer-reviewed

Takuy Furuta, Akira Ono

INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS　18　(10)　2066-2070　2009/11

DOI： 10.1142/S0218301309014305 　

ISSN： 0218-3013

eISSN： 1793-6608
Relevance of equilibrium in multifragmentation Peer-reviewed

Takuya Furuta, Akira Ono

PHYSICAL REVIEW C　79　(1)　014608-(12 pages)　2009/01

DOI： 10.1103/PhysRevC.79.014608 　

ISSN： 0556-2813

eISSN： 1089-490X
Clusters and Fragments Formed in Expanding Nuclear Matter in Heavy-Ion Collisions Peer-reviewed

Akira Ono

BULK NUCLEAR PROPERTIES　1128　112-119　2009

DOI： 10.1063/1.3146205 　

ISSN： 0094-243X
Transport model simulations of projectile fragmentation reactions at 140 MeV/nucleon Peer-reviewed

M. Mocko, M. B. Tsang, D. Lacroix, A. Ono, P. Danielewicz, W. G. Lynch, R. J. Charity

PHYSICAL REVIEW C　78　(2)　024612-(12 pages)　2008/08

DOI： 10.1103/PhysRevC.78.024612 　

ISSN： 0556-2813
Dynamical aspects of multifragmentation

Akira Ono

Proc. International Nuclear Physics Conference (INPC2007), (Tokyo 2007) Volume 2　510-512　2008/06
Comparison of multifragmentation dynamical models Peer-reviewed

J. Rizzo, M. Colonna, A. Ono

PHYSICAL REVIEW C　76　(2)　024611-(9 pages)　2007/08

DOI： 10.1103/PhysRevC.76.024611 　

ISSN： 0556-2813
Clustering and symmetry energy in a low density nuclear gas Invited Peer-reviewed

S. Kowalski, J. B. Natowitz, S. Shlomo, R. Wada, K. Hagel, J. Wang, T. Materna, Z. Chen, Y. G. Ma, L. Qin, A. S. Botvina, D. Fabris, M. Lunardon, S. Moretto, G. Nebbia, S. Pesente, V. Rizzi, G. Viesti, M. Cinausero, G. Prete, T. Keutgen, Y. El Masri, Z. Majka, A. Ono

NUCLEAR PHYSICS A　787　(1-4 SPEC. ISS.)　619C-626C　2007/05

DOI： 10.1016/j.nuclphysa.2006.12.092 　

ISSN： 0375-9474

eISSN： 1873-1554
Experimental determination of the symmetry energy of a low density nuclear gas Peer-reviewed

S. Kowalski, J. B. Natowitz, S. Shlomo, R. Wada, K. Hagel, J. Wang, T. Materna, Z. Chen, Y. G. Ma, L. Qin, A. S. Botvina, D. Fabris, M. Lunardon, S. Moretto, G. Nebbia, S. Pesente, V. Rizzi, G. Viesti, M. Cinausero, G. Prete, T. Keutgen, Y. El Masri, Z. Majka, A. Ono

PHYSICAL REVIEW C　75　(1)　014601-(7 pages)　2007/01

DOI： 10.1103/PhysRevC.75.014601 　

ISSN： 0556-2813
Properties of the initial participant matter interaction zone in near-Fermi-energy heavy-ion collisions Peer-reviewed

J. Wang, T. Keutgen, R. Wada, K. Hagel, S. Kowalski, T. Materna, L. Qin, Z. Chen, J. B. Natowitz, Y. G. Ma, M. Murray, A. Keksis, E. Martin, A. Ruangma, D. V. Shetty, G. Souliotis, M. Veselsky, E. M. Winchester, S. J. Yennello, D. Fabris, M. Lunardon, S. Moretto, G. Nebbia, S. Pesente, V. Rizzi, G. Viesti, M. Cinausero, G. Prete, J. Cibor, Z. Majka, P. Staszel, W. Zipper, Y. El Masri, R. Alfaro, A. Martinez-Davalos, A. Menchaca-Rocha, A. Ono

PHYSICAL REVIEW C　75　(1)　014604-(9 pages)　2007/01

DOI： 10.1103/PhysRevC.75.014604 　

ISSN： 0556-2813
Multifragmentation and symmetry energy studied with antisymmetrized molecular dynamics Invited Peer-reviewed

Akira Ono

VI Latin American Symposium on Nuclear Physics and Applications　884　292-298　2007

DOI： 10.1063/1.2710595 　

ISSN： 0094-243X
Dynamical models for fragment formation Invited Peer-reviewed

A. Ono, J. Randrup

EUROPEAN PHYSICAL JOURNAL A　30　(1)　109-120　2006/10

DOI： 10.1140/epja/i2006-10110-1 　

ISSN： 1434-6001

eISSN： 1434-601X
Nuclear liquid-gas phase transition studied with antisymmetrized molecular dynamics Peer-reviewed

Takuya Furuta, Akira Ono

PHYSICAL REVIEW C　74　(1)　014612-(13 pages)　2006/07

DOI： 10.1103/PhysRevC.74.014612 　

ISSN： 0556-2813
Short timescale behavior of colliding heavy nuclei at intermediate energies Peer-reviewed

S. Hudan, R. T. de Souza, A. Ono

PHYSICAL REVIEW C　73　(5)　054602-(15 pages)　2006/05

DOI： 10.1103/PhysRevC.73.054602 　

ISSN： 2469-9985

eISSN： 2469-9993
Tracing the evolution of temperature in near Fermi energy heavy ion collisions Peer-reviewed

J Wang, R Wada, T Keutgen, K Hagel, YG Ma, M Murray, L Qin, A Botvina, S Kowalski, T Materna, JB Natowitz, R Alfarro, J Cibor, M Cinausero, YE Masri, D Fabris, E Fioretto, A Keksis, M Lunardon, A Makeev, N Marie, E Martin, Z Majka, A Martinez-Davalos, A Menchaca-Rocha, G Nebbia, G Prete, Rizzi, V, A Ruangma, DV Shetty, G Souliotis, P Staszel, M Veselsky, G Viesti, EM Winchester, SJ Yennello, W Zipper, A Ono

PHYSICAL REVIEW C　72　(2)　024603-(9 pages)　2005/08

DOI： 10.1103/PhysRevC.72.024603 　

ISSN： 0556-2813
Ghoshal-like test of equilibration in near-Fermi-energy heavy-ion collisions Peer-reviewed

J Wang, T Keutgen, R Wada, K Hagel, YG Ma, M Murray, L Qin, P Smith, JB Natowitz, R Alfaro, J Cibor, A Botvina, M Cinausero, Y El Masri, D Fabris, A Keksis, S Kowalski, M Lunardon, A Makeev, N Marie, E Martin, Z Majka, A Martinez-Davalos, A Menchaca-Rocha, G Nebbia, S Moretto, G Prete, Rizzi, V, A Ruangma, DV Shetty, G Souliotis, P Staszel, M Veselsky, G Viesti, EM Winchester, SJ Yennello, W Zipper, A Ono

PHYSICAL REVIEW C　71　(5)　054608-(7 pages)　2005/05

DOI： 10.1103/PhysRevC.71.054608 　

ISSN： 0556-2813
Isoscaling and symmetry energy in dynamical fragment formation Peer-reviewed

A Ono

Reaction Mechanisms for Rare Isotope Beams　791　83-92　2005

DOI： 10.1063/1.2114696 　

ISSN： 0094-243X
Symmetry energy for fragmentation in dynamical nuclear collisions Peer-reviewed

A Ono, P Danielewicz, WA Friedman, WG Lynch, MB Tsang

PHYSICAL REVIEW C　70　(4)　041604(R)-(5 pages)　2004/10

DOI： 10.1103/PhysRevC.70.041604 　

ISSN： 0556-2813
Isospin fractionation and isoscaling in dynamical nuclear collisions Peer-reviewed

A Ono, P Danielewicz, WA Friedman, WG Lynch, MB Tsang

NUCLEAR PHYSICS A　738　(1-4 SUPPL.)　308-312　2004/06

DOI： 10.1016/j.nuclphysa.2004.04.051 　

ISSN： 0375-9474

eISSN： 1873-1554
Reaction dynamics and multifragmentation in Fermi energy heavy ion reactions Peer-reviewed

R Wada, T Keutgen, K Hagel, YG Ma, J Wang, M Murray, L Qin, P Smith, JB Natowitz, R Alfarro, J Cibor, M Cinausero, Y El Masri, D Fabris, E Fioretto, A Keksis, S Kowalski, M Lunardon, A Makeev, N Marie, E Martin, Z Majka, A Martinez-Davalos, A Menchaca-Rocha, G Nebbia, G Prete, Rizzi, V, A Ruangma, DV Shetty, G Souliotis, P Staszel, M Veselsky, G Viesti, EM Winchester, SJ Yennello, W Zipper, A Ono

PHYSICAL REVIEW C　69　(4)　044610-(27 pages)　2004/04

DOI： 10.1103/PhysRevC.69.044610 　

ISSN： 2469-9985

eISSN： 2469-9993
Antisymmetrized molecular dynamics for heavy ion collisions Invited Peer-reviewed

A Ono, H Horiuchi

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 53, NO 2　53　(2)　501-581　2004

DOI： 10.1016/j.ppnp.2004.05.002 　

ISSN： 0146-6410
Nuclear liquid-gas phase transition studied with antisymmetrized molecular dynamics Peer-reviewed

T Furuta, A Ono

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT　156　(156)　147-149　2004

ISSN： 0375-9687
Isospin fractionation and isoscaling in dynamical simulations of nuclear collisions Peer-reviewed

A Ono, P Danielewicz, WA Friedman, WG Lynch, MB Tsang

PHYSICAL REVIEW C　68　(5)　051601(R)-(5 pages)　2003/11

DOI： 10.1103/PhysRevC.68.051601 　

ISSN： 0556-2813

eISSN： 1089-490X
Erratum: "Production of projectile-like fragments at intermediate energies" (Nuclear Physics A (2002) vol. 701 (150) S0375947401015640) Peer-reviewed

S. Momota, M. Notani, S. Ito, A. Ozawa, T. Suzuki, I. Tanihata, N. Aoi, H. Sakurai, T. Teranishi, Y. Watanabe, A. Yoshida, A. Inabe, T. Kubo, H. Okuno, N. Fukuda, H. Iwasaki, K. Yoneda, H. Ogawa, A. Kitagawa, M. Kanazawa, M. Torikoshi, M. Suda, A. Ono

Nuclear Physics A　712　(3-4)　371　2002/12/30

DOI： 10.1016/S0375-9474(02)01267-8 　

ISSN： 0375-9474
Production of projectile-like fragments at intermediate energies (vol 701, pg 150, 2002) Peer-reviewed

S Momota, A Notani, S Ito, A Ozawa, T Suzuki, Tanihata, I, N Aoi, H Sakurai, T Teranishi, Y Watanabe, A Yoshida, A Inabe, T Kubo, H Okuno, N Fukuda, H Iwasaki, K Yoneda, H Ogawa, A Kitagawa, M Kanazawa, M Torikoshi, M Suda, A Ono

NUCLEAR PHYSICS A　712　(3-4)　371-371　2002/12

DOI： 10.1016/S0375-9474(01)01564-0 　

ISSN： 0375-9474

eISSN： 1873-1554
AMD study of the EOS of asymmetric nuclear matter in nuclear collisions Invited

A. Ono

Prog. Theor. Phys. Suppl.　146　378-387　2002/12
Publisher: Oxford University Press ({OUP})
DOI： 10.1143/ptps.146.378 　

ISSN： 0375-9687
Compatibility of localized wave packets and unrestricted single particle dynamics for cluster formation in nuclear collisions Peer-reviewed

A Ono, S Hudan, A Chbihi, JD Frankland

PHYSICAL REVIEW C　66　(1)　014603-(15 pages)　2002/07

DOI： 10.1103/PhysRevC.66.014603 　

ISSN： 0556-2813
Sequential decay distortion of Goldhaber model widths for spectator fragments Peer-reviewed

YG Ma, R Wada, K Hagel, M Murray, JS Wang, LJ Qin, A Makeev, P Smith, JB Natowitz, A Ono

PHYSICAL REVIEW C　65　(5)　051602-(4 pages)　2002/05

DOI： 10.1103/PhysRevC.65.051602 　

ISSN： 0556-2813
Production of projectile-like fragments at intermediate energies Peer-reviewed

S Momota, M Notani, S Ito, A Ozawa, T Suzuki, Tanihata, I, N Aoi, H Sakurai, T Teranishi, Y Watanabe, A Yoshida, A Inabe, T Kubo, H Okuno, N Fukuda, H Iwasaki, K Yoneda, H Ogawa, A Kitagawa, M Kanazawa, M Torikoshi, M Suda, A Ono

NUCLEAR PHYSICS A　701　150C-155C　2002/04

ISSN： 0375-9474
AMD study of the EOS of asymmetric nuclear matter in nuclear collisions Peer-reviewed

A Ono

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT　(146)　378-387　2002

ISSN： 0375-9687
Erratum: Sequential decay distortion of Goldhaber model widths for spectator fragments (Physical Review C (2002) 65 (051602(R))) Peer-reviewed

Ma Y.G, Wada R, Hagel K, Murray M, Wang J.S, Qin L.J, Makeev A, Smith P, Natowitz J.B, Ono A

Physical Review C - Nuclear Physics　66　(2)　299021-299021　2002
Publisher: American Physical Society ({APS})
DOI： 10.1103/physrevc.66.029902 　

ISSN： 0556-2813
Incident-energy dependence of the fragmentation mechanism reflecting the cluster structure of the B-19 nucleus Peer-reviewed

H Takemoto, H Horiuchi, A Ono

PHYSICAL REVIEW C　63　(3)　034615-(11 pages)　2001/03

DOI： 10.1103/PhysRevC.63.034615 　

ISSN： 2469-9985

eISSN： 2469-9993
Incident-energy dependence of the fragmentation mechanism reflecting the cluster structure of the 19B nucleus Peer-reviewed

Hiroki Takemoto, Hisashi Horiuchi, Akira Ono

Physical Review C - Nuclear Physics　63　(3)　346151-3461511　2001
Publisher: American Physical Society
DOI： 10.1103/PhysRevC.63.034615 　

ISSN： 1089-490X 0556-2813

eISSN： 1089-490X
Antisymmetrized molecular dynamics approach to multifragmentation Invited

A. Ono

Prog. Theor. Phys. Suppl.　140　134-155　2000/12
Reaction mechanisms and multifragmentation processes in Zn-64+Ni-58 at 35A-79A MeV Peer-reviewed

R Wada, K Hagel, J Cibor, M Gonin, N Keutgen, M Murray, JB Natowitz, A Ono, JC Steckmeyer, A Kerambrum, JC Angelique, A Auger, G Bizard, R Brou, C Cabot, E Crema, D Cussol, D Durand, Y El Masri, P Eudes, ZY He, SC Jeong, C Lebrun, JP Patry, A Peghaire, J Peter, R Regimbart, E Rosato, F Saint-Laurent, B Tamain, E Vient

PHYSICAL REVIEW C　62　(3)　346011-3460119　2000/09

ISSN： 0556-2813
Reaction mechanisms and multifragmentation processes in [Formula Presented] at [Formula Presented]

Wada, R., Hagel, K., Cibor, J., Gonin, M., Keutgen, T., Murray, M., Natowitz, J.B., Ono, A., Steckmeyer, J.C., Kerambrum, A., Ang{\'e}lique, J.C., Auger, A., Bizard, G., Brou, R., Cabot, C., Crema, E., Cussol, D., Dur, , D., El Masri, Y., Eudes, P., He, Z.Y., Jeong, S.C., Lebrun, C., Patry, J.P., P{\'e}ghaire, A., Peter, J., R{\'e}gimbart, R., Rosato, E., Saint-Laurent, F., Tamain, B., Vient, E.

Physical Review C - Nuclear Physics　62　(3)　19-19　2000

DOI： 10.1103/PhysRevC.62.034601 　
Cluster formation dynamics in medium energy nuclear collisions Invited

A Ono

PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON CLUSTERING ASPECTS OF NUCLEAR STRUCTURE AND DYNAMICS　294-301　2000
Antisymmetrized molecular dynamics approach to multifragmentation Peer-reviewed

A Ono

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT　(140)　134-155　2000

DOI： 10.1143/PTPS.140.134 　

ISSN： 0375-9687
Nucleon-induced fragment formation with antisymmetrized molecular dynamics Peer-reviewed

Y Tosaka, A Ono, H Horiuchi

PHYSICAL REVIEW C　60　(6)　064613-(9 pages)　1999/12

DOI： 10.1103/PhysRevC.60.064613 　

ISSN： 2469-9985

eISSN： 2469-9993
Erratum: Bremsstrahlung in α decay [Phys. Rev. C59, R593 (1999)] Peer-reviewed

N. Takigawa, Y. Nozawa, K. Hagino, A. Ono, D. M. Brink

Physical Review C　60　(6)　1999/10
Publisher: American Physical Society ({APS})
DOI： 10.1103/physrevc.60.069901 　

ISSN： 0556-2813
AMD study of multifragmentation Invited

A. Ono, H. Horiuchi

HIRSCHEGG '99: Multifragmentation　273-282　1999/03

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GSI
Bremsstrahlung in alpha decay Peer-reviewed

N Takigawa, Y Nozawa, K Hagino, A Ono, DM Brink

PHYSICAL REVIEW C　59　(2)　R593-R597　1999/02

DOI： 10.1103/PhysRevC.59.R593 　

ISSN： 0556-2813

eISSN： 1089-490X
Antisymmetrized molecular dynamics with quantum branching processes for collisions of heavy nuclei Peer-reviewed

A Ono

PHYSICAL REVIEW C　59　(2)　853-864　1999/02

DOI： 10.1103/PhysRevC.59.853 　

ISSN： 0556-2813
Nucleon-induced fragment formation with antisymmetrized molecular dynamics Peer-reviewed

Yoshiharu Tosaka, Akira Ono, Hisashi Horiuchi

Physical Review C - Nuclear Physics　60　(6)　9　1999

DOI： 10.1103/PhysRevC.60.064613 　

ISSN： 1089-490X 0556-2813
Study of the clustering structure of B-19 by the use of fragmentation reaction Peer-reviewed

H Takemoto, H Horiuchi, A Ono

PROGRESS OF THEORETICAL PHYSICS　101　(1)　101-117　1999/01

DOI： 10.1143/PTP.101.101 　

ISSN： 0033-068X
Entrance channel dynamics in Ca-40+Ca-40 at 35A MeV Peer-reviewed

R Wada, K Hagel, J Cibor, J Li, N Marie, WQ Shen, Y Zhao, JB Natowitz, A Ono

PHYSICS LETTERS B　422　(1-4)　6-12　1998/03

DOI： 10.1016/S0370-2693(98)00033-1 　

ISSN： 0370-2693
Application of antisymmetrized molecular dynamics to nucleus-nucleus collisions Peer-reviewed

A Ono, H Horiuchi, H Takemoto, R Wada

NUCLEAR PHYSICS A　630　(1-2)　148C-159C　1998/02

DOI： 10.1016/S0375-9474(97)00751-3 　

ISSN： 0375-9474
Alpha-clustering effect in C-12 fragmentation Peer-reviewed

H Takemoto, H Horiuchi, A Ono

PROCEEDINGS OF THE XVII RCNP INTERNATIONAL SYMPOSIUM ON INNOVATIVE COMPUTATIONAL METHODS IN NUCLEAR MANY-BODY PROBLEMS　478-480　1998
Antisymmetrized molecular dynamics calculation of collisions of heavy nuclei Invited

A Ono, H Horiuchi

PROCEEDINGS OF THE XVII RCNP INTERNATIONAL SYMPOSIUM ON INNOVATIVE COMPUTATIONAL METHODS IN NUCLEAR MANY-BODY PROBLEMS　443-451　1998
Comparison of clustering effects in [Formula Presented] fragmentation among [Formula Presented] and [Formula Presented] reactions: Excitation of α-cluster degrees of freedom in nuclear collisions Peer-reviewed

Hiroki Takemoto, Hisashi Horiuchi, Akira Ono

Physical Review C - Nuclear Physics　57　(2)　811-821　1998

DOI： 10.1103/PhysRevC.57.811 　

ISSN： 1089-490X 0556-2813

eISSN： 1089-490X
Determination of in-medium nucleon-nucleon cross sections from the data of proton-induced reaction cross sections Peer-reviewed

EI Tanaka, H Horiuchi, A Ono

PHYSICAL REVIEW C　54　(6)　3170-3174　1996/12

DOI： 10.1103/PhysRevC.54.3170 　

ISSN： 0556-2813

eISSN： 1089-490X
Fragmentation described by the improved antisymmetrized molecular dynamics Invited

A. Ono, H. Horiuchi

Second International Symposium on Heavy Ion Physics and Its Applications　131-140　1996/08

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World Scientific<br /> Lanzhou, Aug 29--Sep 1, 1995,<br /> edited by Y. X. Luo et al.
Study of nuclear reactions and nuclear structure with antisymmetrized molecular dynamics Invited

H. Horiuchi, A. Ono, Y. Kanada-En'yo

Second International Symposium on Heavy Ion Physics and Its Applications　92-101　1996/08

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World Scientific<br /> Lanzhou, Aug 29--Sep 1, 1995,<br /> edited by Y. X. Luo et al.
The mass yield distribution of fragments studied with improved antisymmetrized molecular dynamics Peer-reviewed

Z Qin, A Ono, WX Li, LL Zhao, TY Sun, S Ambe, Y Ohkubo, M Iwamoto, Y Kobayashi, H Maeda, F Ambe

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI　355　(3)　315-316　1996/08

DOI： 10.1007/bf02769699 　

ISSN： 0939-7922
He-4 fragments from the N-14+C-12 collision at 35 MeV/nucleon and clustering in colliding nuclei Peer-reviewed

H Takemoto, H Horiuchi, A Engel, A Ono

PHYSICAL REVIEW C　54　(1)　266-275　1996/07

DOI： 10.1103/PhysRevC.54.266 　

ISSN： 2469-9985

eISSN： 2469-9993
中間エネルギー（p,p'X）反応のＡＭＤによる研究

田中英二, 小野章, 堀内昶, 丸山智幸, A.Engel

第２回「ハドロン多体系のシミュレーション研究会」報告集　129-132　1996/06
Antisymmetrized molecular dynamics of wave packets with stochastic incorporation of the Vlasov equation Peer-reviewed

A Ono, H Horiuchi

PHYSICAL REVIEW C　53　(6)　2958-2972　1996/06

DOI： 10.1103/PhysRevC.53.2958 　

ISSN： 2469-9985

eISSN： 2469-9993
Statistical properties of antisymmetrized molecular dynamics for non-nucleon-emission and nucleon-emission processes Peer-reviewed

A Ono, H Horiuchi

PHYSICAL REVIEW C　53　(5)　2341-2351　1996/05

DOI： 10.1103/PhysRevC.53.2341 　

ISSN： 0556-2813
Improvement of the nucleon emission process and the statistical property in molecular dynamics Peer-reviewed

A Ono, H Horiuchi

PHYSICAL REVIEW C　53　(2)　845-848　1996/02

DOI： 10.1103/PhysRevC.53.845 　

ISSN： 0556-2813
Antisymmetrized molecular dynamics of wave packets with stochastic incorporation of the Vlasov equation Peer-reviewed

Akira Ono, Hisashi Horiuchi

Physical Review C - Nuclear Physics　53　(6)　2958-2972　1996
Publisher: American Physical Society
DOI： 10.1103/PhysRevC.53.2958 　

ISSN： 1089-490X 0556-2813
4He fragments from the 14N + 12C collision at 35 MeV/nucleon and clustering in colliding nuclei Peer-reviewed

Hiroki Takemoto, Hisashi Horiuchi, Andreas Engel, Akira Ono

Physical Review C - Nuclear Physics　54　(1)　266-275　1996
Publisher: American Physical Society
DOI： 10.1103/PhysRevC.54.266 　

ISSN： 1089-490X 0556-2813

eISSN： 1089-490X
Statistical property of AMD Invited

A Ono, H Horiuchi

ADVANCES IN NUCLEAR DYNAMICS 2　119-128　1996
Statistical Property of AMD Peer-reviewed

Akira Ono, Hisashi Horiuchi

Advances in Nuclear Dynamics 2　119　1996
Publisher: Springer {US}
DOI： 10.1007/978-1-4757-9086-3_17 　
Delta Degrees of freedom in antisymmetrized molecular dynamics and (p,p') reactions in the Delta region Peer-reviewed

A Engel, EI Tanaka, T Maruyama, A Ono, H Horiuchi

PHYSICAL REVIEW C　52　(6)　3231-3248　1995/12

DOI： 10.1103/PhysRevC.52.3231 　

ISSN： 0556-2813
STRUCTURE OF LI AND BE ISOTOPES STUDIED WITH ANTISYMMETRIZED MOLECULAR-DYNAMICS Peer-reviewed

Y KANADA-EN'YO, H HORIUCHI, A ONO

PHYSICAL REVIEW C　52　(2)　628-646　1995/08

DOI： 10.1103/PhysRevC.52.628 　

ISSN： 2469-9985

eISSN： 2469-9993
PROTON INELASTIC-SCATTERING TO CONTINUUM STUDIED WITH ANTISYMMETRIZED MOLECULAR-DYNAMICS Peer-reviewed

EI TANAKA, A ONO, H HORIUCHI, T MARUYAMA, A ENGEL

PHYSICAL REVIEW C　52　(1)　316-325　1995/07

DOI： 10.1103/PhysRevC.52.316 　

ISSN： 0556-2813
Structure of Li and Be isotopes studied with antisymmetrized molecular dynamics Peer-reviewed

Yoshiko Kanada-Enyo, Hisashi Horiuchi, Akira Ono

Physical Review C　52　(2)　628-646　1995

DOI： 10.1103/PhysRevC.52.628 　

ISSN： 0556-2813
FLOW OF NUCLEONS AND FRAGMENTS IN AR-40+AL-27 COLLISIONS STUDIED WITH ANTISYMMETRIZED MOLECULAR-DYNAMICS Peer-reviewed

A ONO, H HORIUCHI

PHYSICAL REVIEW C　51　(1)　299-309　1995/01

DOI： 10.1103/PhysRevC.51.299 　

ISSN： 0556-2813
NEUTRON-RICH NUCLEI STUDIED WITH AMD Peer-reviewed

H HORIUCHI, Y KANADA-EN'YO, A ONO

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI　349　(3-4)　279-283　1994/09

DOI： 10.1007/BF01288975 　

ISSN： 0939-7922
NUCLEON FLOW AND FRAGMENT FLOW IN HEAVY-ION REACTIONS Peer-reviewed

A ONO, H HORIUCHI, T MARUYAMA

PHYSICAL REVIEW C　48　(6)　2946-2955　1993/12

DOI： 10.1103/PhysRevC.48.2946 　

ISSN： 0556-2813
MOMENTUM DISTRIBUTION OF FRAGMENTS IN HEAVY-ION REACTIONS - DEPENDENCE ON THE STOCHASTIC COLLISION PROCESS Peer-reviewed

A ONO, H HORIUCHI, T MARUYAMA, A OHNISHI

PHYSICAL REVIEW C　47　(6)　2652-2660　1993/06

DOI： 10.1103/PhysRevC.47.2652 　

ISSN： 0556-2813
FRAGMENT MASS-DISTRIBUTION AND THE REACTION-TIME SCALE STUDIED BY QUANTUM MOLECULAR-DYNAMICS Peer-reviewed

T MARUYAMA, A ONO, A OHNISHI, H HORIUCHI

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 30　30　187-188　1993

ISSN： 0146-6410
FRAGMENT MASS-DISTRIBUTION AND THE REACTION-TIME SCALE STUDIED BY QUANTUM MOLECULAR-DYNAMICS Peer-reviewed

T MARUYAMA, A ONO, A OHNISHI, H HORIUCHI

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS　30　(C)　187-188　1993

DOI： 10.1016/0146-6410(93)90022-8 　

ISSN： 0146-6410
FRAGMENT MASS-DISTRIBUTION IN INTERMEDIATE ENERGY HEAVY-ION COLLISIONS AND THE REACTION-TIME SCALE Peer-reviewed

T MARUYAMA, A ONO, A OHNISHI, H HORIUCHI

PROGRESS OF THEORETICAL PHYSICS　87　(6)　1367-1376　1992/06

DOI： 10.1143/PTP.87.1367 　

ISSN： 0033-068X
FRAGMENT FORMATION STUDIED WITH ANTISYMMETRIZED VERSION OF MOLECULAR-DYNAMICS WITH 2-NUCLEON COLLISIONS Peer-reviewed

A ONO, H HORIUCHI, T MARUYAMA, A OHNISHI

PHYSICAL REVIEW LETTERS　68　(19)　2898-2900　1992/05

DOI： 10.1103/PhysRevLett.68.2898 　

ISSN： 0031-9007
ANTISYMMETRIZED VERSION OF MOLECULAR-DYNAMICS WITH 2-NUCLEON COLLISIONS AND ITS APPLICATION TO HEAVY-ION REACTIONS Peer-reviewed

A ONO, H HORIUCHI, T MARUYAMA, A OHNISHI

PROGRESS OF THEORETICAL PHYSICS　87　(5)　1185-1206　1992/05

DOI： 10.1143/ptp.87.1185 　

ISSN： 0033-068X

Show all ︎Show first 5

Books and Other Publications 2

Frontiers in Nuclear and Particle Physics Vol. 2

Edited by, Yoritaka Iwata, Author of Chapter, Akira Ono

Bentham Science Publishers　2019/06

ISBN: 9781681087658

More details Close

dio:10.2174/9781681087641119020011 (Chapter 7)
Nuclear Particle Correlations and Cluster Physics

Edited by Wolf-Udo Schröder, Author of Chapter, Akira Ono

World Scientific　2017/07

ISBN: 9789813209343

More details Close

doi:10.1142/9789813209350_0016 (Chapter 16)

Presentations 111

Correlations and fluctuations in heavy-ion collisions within antisymmetrized molecular dynamics International-presentation Invited

Akira Ono

NUCLEAR2025: NUCLear Exotic structures And Related phenomena, Jiangwan Campus, Fudan University, Shanghai, China　2025/09/23
Production of clusters and pions in heavy-ion collisions International-presentation Invited

Akira Ono

Workshop on Structures and Reactions of Exotic Nuclei, Tongji University, Shanghai, China　2025/06/25
AMD study on clustering, fluctuations and pions in compressed and expanding nuclear systems International-presentation Invited

Akira Ono

ACS Seaborg Award Symposium Honoring ManYee (Betty) Tsang, ACS Seaborg Award Symposium Honoring ManYee (Betty) Tsang, San Diego, CA, USA　2025/03/25
AMD simulation for reaction and fragmentation cross sections International-presentation Invited

Akira Ono

International symposium: TRIP Usecase: Nuclear Transmutation 2025, RIKEN Wako Campus, Japan　2025/03/11
Applications of AMD with Improved Collision Term International-presentation Invited

Akira Ono

Workshop on Exotic Nuclear Structures in Open Quantum Systems and Novel Effects in Heavy-Ion Collision Dynamics, Fudan University, Shanghai, China　2025/03/05
Physics in Nuclear Fragmentation Invited

Akira Ono

Workshop on Advancing Physics at Next RI Beam Factory (ADRIB25), RIKEN, Wako, Japan　2025/01/22
AMDによる核反応シミュレーションの課題 Invited

小野章

研究会「核反応の時間発展ダイナミクスの解明に向けて」　2024/09/25
Understanding of expanding and clustering matter: Cluster correlation and momentum fluctuation in AMD International-presentation Invited

Akira Ono

NuSYM24: XIIth International Symposium on Nuclear Symmetry Energy, GANIL, Caen, France　2024/09/13
Cluster and pion production with collision terms under momentum-dependent mean fields International-presentation Invited

Akira Ono

iHIC24: 2nd Symposium on Intermediate-energy Heavy Ion Collisions, Tsinghua University, Beijing, China　2024/07/15
分子動力学法における量子統計性 Invited

小野章

大西さん追悼研究会「クォーク・ハドロン・原子核物理の潮流と展望」　2024/03/02
EOS from expanding and clusterizing matter in heavy-ion collisions Invited

Akira Ono

Workshop on Equation of State of Dense Nuclear Matter, during DNP-JPS Joint Meeting, Hilton Waikoloa Village, Hawaii Big Island, USA　2023/11/27
When and where are clusters formed in expanding systems? International-presentation

Akira Ono

NuSYM23: XIth International Symposium on Nuclear Symmetry Energy, GSI, Darmstadt, Germany　2023/09/21
Collision terms with energy conservation in AMD and sJAM Invited

Akira Ono

RIKEN Workshop: Equation of State of Dense Nuclear Matter at RIBF and FRIB, Wako, Japan　2023/05/23
Heavy-ion collisions to study compressed nuclear matter Invited

Akira Ono

RIKEN Workshop: Giant monopole resonance and related topics, Wako, Japan　2023/05/18
Exploring EOS in heavy-ion collisions with transport models International-presentation Invited

Akira Ono

Pioneering Session on the Equation of State of Nuclaer Matter, Spring Meeting of the Korean Physical Society, Online　2022/04/21
Transport model approach for clusters in heavy-ion collision dynamics Invited

Akira Ono

IWM-EC 2021: International Workshop on Multi-facets of EOS and Clustering　2021/11/25
Light clusters in dynamic evolution of heavy-ion collisions Invited

Akira Ono

NuSYM21: International Symposium on Nuclear Symmetry Energy　2021/10/13
重イオン衝突でのπ中間子生成に関するΔ共鳴の閾値効果

小野章, 池野なつ美

日本物理学会2021年秋季大会　2021/09/16
Effects of cluster correlations and symmetry energy in heavy-ion collisions International-presentation Invited

Akira Ono

NuSYM2019: 9th International Symposium on Nuclear Symmetry Energy　2019/10/04
AMD+JAM and pion homework International-presentation Invited

Akira Ono

Meeting on Heavy-Ion Transport Code Comparison　2019/09/28
Pauli and cluster correlations International-presentation Invited

Akira Ono

ECT* Workshop "Challenges to Transport Theory for Heavy-Ion Collisions"　2019/05/21
Impacts of cluster correlations on heavy-ion collision dynamics International-presentation

Akira Ono

NN2018: 13th International Conference on Nucleus-Nucleus Collisions　2018/12/04
Summary of HW3 results International-presentation Invited

Akira Ono

Transport Workshop 2018　2018/09/14
Interplay between cluster correlations and collision dynamics International-presentation Invited

Akira Ono

NuSYM18: 8th International Symposium on Nuclear Symmetry Energy　2018/09/11
Pauli blocking effects on pion production in AMD+JAM approach International-presentation Invited

Akira Ono

International Workshop on Nuclear Dynamics in Heavy-Ion Reactions (IWND2018)　2018/06/12
輸送模型計算におけるπ生成

小野章

新学術領域「中性子星核物質」理論班主催研究会 2018　2018/02/20
Light clusters and light nuclei in collision dynamics International-presentation Invited

7th International Symposium on Nuclear Symmetry Energy　2017/09/04
Status of HW3 -- Pion Production International-presentation

7th International Symposium on Nuclear Symmetry Energy　2017/09/04
Understanding results of box calculation Hw3: production of pion-like particles International-presentation

Transport 2017: International Workshop on Transport Simulations for Heavy Ion Collisions under Controlled Conditions　2017/03/27
AMD and JAM description International-presentation

Transport 2017: International Workshop on Transport Simulations for Heavy Ion Collisions under Controlled Conditions　2017/03/27
Cluster production in AMD model International-presentation

Transport 2017: International Workshop on Transport Simulations for Heavy Ion Collisions under Controlled Conditions　2017/03/27
Discussions on pion box homework International-presentation

The 2017 ICNT Program at FRIB: Extracting Bulk Properties of Neutron-Rich Matter with Transport Models in Bayesian Perspective　2017/03/22
Neutron-proton dynamics and pion emission in heavy-ion collisions International-presentation

Neutron Star Matter (NSMAT2016)　2016/11/21
Production of clusters and pions in heavy-ion collisions International-presentation Invited

WNCP2016: Workshop on Nuclear Cluster Physics　2016/11/14
Production of clusters and pions in heavy-ion collisions International-presentation

NPCSM 2016: YIPQS long-term and Nishinomiya-Yukawa memorial workshop on Nuclear Physics, Compact Stars, and Compact Star Mergers 2016　2016/10/17
Periodic condition on AMD International-presentation

Transport Workshop on Box Simulation Comparison　2016/06/18
Clusters in heavy-ion collision dynamics studied with AMD International-presentation Invited

Akira Ono, Natsumi Ikeno

6th International Symposium on Nuclear Symmetry Energy　2016/06/13
Dynamics of light clusters in fragmentation reactions International-presentation

International Workshop on Multi facets of EOS and Clustering　2016/05/09
Impacts of clusters in heavy-ion collisions within antisymmetrized molecular dynamics International-presentation

SINAP-CUSTIPEN Workshop on Clusters and Correlations in Nuclei, Nuclear Reactions and Neutron Stars　2015/12/14
Cluster production within antisymmetrized molecular dynamics International-presentation

5th International Workshop on Compound-Nuclear Reactions and Related Topics　2015/10/19
Clusters and EOS in heavy-ion collisions International-presentation

Clusters, EOS in heavy-ion collisions

Numazu Workshop 2015: Challenges of modeling supernovae with nuclear data　2015/09/01
Cluster formation within transport theory International-presentation

5th International Symposium on Nuclear Symmetry Energy　2015/06/29
Cluster production within transport theory International-presentation

The 12th International Conference on Nucleus-Nucleus Collisions　2015/06/21
Influence of clusters and symmetry energy on pion production at 300 MeV/nucleon International-presentation

N. Ikeno, Y. Nara, A. Ohnishi

Workshop on Science with SpiRIT TPC　2015/06/05
重イオン衝突における高密度対称エネルギーの影響

池野なつ美

日本物理学会第70回年次大会　2015/03/21
重イオン衝突における陽子・中性子・クラスターのダイナミクス

新学術領域研究会「中性子星核物質」　2015/03/12
Heavy-ion collisions and nuclear EOS International-presentation

International Workshop "Advances and Perspectives in Computational Nuclear Physics''　2014/10/05
Fragmentation in nuclear reaction and its relation to EOS International-presentation

3rd International Workshop on State of the Art in Nuclear Cluster Physics　2014/05/26
フラグメンテーション（理論）

ミニワークショップ＠東北大「ジェファーソン研究所におけるハイパー核物理研究の将来について　2014/04/16
Light cluster production in antisymmetrized molecular dynamics International-presentation

ECT* Workshop "Simulating the Supernova Neutrinosphere with Heavy Ion Collisions"　2014/04/07
Short presentation about AMD International-presentation

International Workshop on Simulations of Low and Intermediate Energy Heavy Ion Collisions　2014/01/08
Antisymmetrization/Multifragmentation in transport models International-presentation

International Workshop on Simulations of Low and Intermediate Energy Heavy Ion Collisions　2014/01/08
反対称化分子動力学法による原子核衝突の計算

第3回 HPCI 戦略プログラム分野2×分野5 異分野交流研究会「量子多体系のダイナミクス計算 —原子核から物質科学まで—」　2013/11/13
重イオン衝突における状態方程式

日本物理学会2013年秋季大会シンポジウム「核物質の対称エネルギーからコンパクト天体現象へ」　2013/09/20
Antisymmetrized molecular dynamics approach for nuclear dynamics International-presentation

HaPhy 2013-8: Heavy ion collisions at low energies　2013/08/20
Nuclear matter properties in heavy-ion collisions International-presentation

HaPhy 2013-8: Heavy ion collisions at low energies　2013/08/20
Handling of clusters in transport models International-presentation

3rd International Conference on Nuclear Symmetry Energy　2013/07/22
Cluster formation in low density matter International-presentation

The 2013 ICNT Program at FRIB: Symmetry Energy in the Context of New Radioactive Beam Facilities and Astrophysics　2013/07/15
核反応と高励起核子多体系：分子動力学によるアプローチ

日本物理学会第68回年次大会シンポジウム「微視的核反応論の最前線」　2013/03/26
重イオン衝突における離合集散

研究会「離合集散の物理とその拡がり」　2013/01/26
Cluster correlations in multifragmentation International-presentation

RIKEN HPCI Workshop on alpha-particle Condensation　2012/11/13
重イオン衝突で探る核物質

新学術領域「実験と観測で解き明かす中性子星の核物質」キックオフシンポジウム　2012/10/26
Nuclear matter properties in fragmentation reactions International-presentation

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics　2012/09/24
Antisymmetrized molecular dynamics International-presentation

APCTP School on Nuclear Transport　2012/07/04
Cluster correlations in multifragmentation International-presentation

11th International Conference on Nucleus-Nucleus Collisions　2012/05/27
多重破砕反応におけるクラスター相関とクラスター間相関

日本物理学会第67回年次大会　2012/03/24
準位密度と状態方程式との関わり

RCNP研究会「リングサイクロトロン施設の将来」　2012/03/21
反対称化分子動力学による核物質と核衝突の研究

研究会「大規模計算による原子核研究の展開 —核子多体系を中心に—」　2012/01/24
Interplay between nuclear collision dynamics and matter properties International-presentation

YITP-KoRIA Workshop on Nuclear Symmetry Energy　2011/11/10
Interplay between collision dynamics and nuclear matter properties from microscopic viewpoint International-presentation

International Workshop on Multifragmentation and Related Topics　2011/11/02
重イオン衝突で探る状態方程式

RIBFミニワークショップ「中性子星の核物質」　2011/09/13
AMDによる核破砕反応シミュレーション

RCNP研究会「RCNPでの核データ研究戦略検討会」　2011/06/28
核衝突のAMD計算におけるSkyrme力とGogny力の比較

K. Hasnaoui

日本物理学会第65回年次大会　2010/03/20
Relevance of equilibrium in multifragmentation International-presentation

Takuya Furuta

The 10th International Conference on Nucleus-Nucleus Collisions　2009/08/16
Clustering in AMD International-presentation

Simulations of Low and Intermediate Energy Heavy Ion Reactions　2009/05/11
Molecular dynamics approaches with Skyrme interactions

K. Hasnaoui, 古田琢哉, 小野章, F. Gulminelli, Ph. Chomaz

日本物理学会第64回年次大会　2009/03/27
核破砕反応・シミュレーション計算

理研ミニワークショップ「核データと核理論」　2009/03/25
Theoretical studies of nuclear collisions and nuclear matter properties International-presentation

RIBF Mini-workshop on Nuclear Collisions and Nuclear Matter　2008/12/16
Clusters and fragments formed in expanding nuclear matter in heavy-ion collisions International-presentation

5th ANL/MSU/JINA/INT FRIB Workshop on Bulk Nuclear Properties　2008/11/19
Nuclear collision dynamics and the equation of state

宇宙核物理連絡協議会主催第１回研究戦略ワークショップ　2008/09/25
入射核破砕片の運動量分布について

日本物理学会第63回年次大会　2008/03/22
Cluster correlations in fragmentation

高等研研究会「原子核のクラスター動力学の最前線」　2008/03/01
Time-dependent AMD calculations for reactions International-presentation

The second LACM-EFES-JUSTIPEN Workshop　2008/01/23
励起した核物質の動力学と熱力学

KEK研究会「原子核・ハドロン物理：横断研究会」　2007/11/19
Dynamical and statistical aspects of multifragmentation studied with AMD International-presentation

International Conference on Nuclear Fragmentation　2007/09/24
Dynamical aspects of multifragmentation International-presentation

International Nuclear Physics Conference 2007　2007/06/03
陽子・中性子数の人工的な制御によって、強い相互作用系の新しい形態を明らかにする

理研仁科加速器研究センター理論研究推進会議拡大ワークショップ　2007/05/24
励起核物質中のクラスター形成

RCNP研究会「核子多体系におけるクラスター現象」　2007/02/14
核子多体系の反応動力学と熱力学

基研研究会「原子核クラスター物理の現状と展望」　2006/12/18
Nuclear liquid-gas phase transition in a molecular dynamics approach International-presentation

The 4th COE International Symposium --- Exploring New Science by Bridging Particle-Matter Hierarchy　2006/06/28
AMD approach for nuclear collision dynamics and thermodynamics International-presentation

Workshop on Simulations of Heavy-Ion Reactions in the Fermi Energy Domain　2006/04/10
AMD approach for nuclear collision dynamics and thermodynamics International-presentation

International Workshop on Nuclear Physics with RIBF　2006/03/13
Multifragmentation and the density dependence of symmetry energy International-presentation

Symposium on Science with Rare Isotope Beams, Part of Pacifichem 2005　2005/12/19
Multifragmentation studied with antisymmetrized molecular dynamics International-presentation

VI Latin American Symposium on Nuclear Physics and Applications　2005/10/03
Effect of symmetry energy in fragment isospin composition International-presentation

JINA Workshop on Nuclear Incompressibility and the Nuclear Equation of State　2005/07/14
Fragment isospin composition and density dependence of symmetry energy International-presentation

Workshop on Nuclear Equation of State for Nuclei, Neutron Stars and Supernovae　2005/04/14
Isoscaling and symmetry energy in dynamical fragment formation International-presentation

Second Argonne/MSU/JINA/INT RIA Workshop: Reaction Mechanisms for Rare Isotope Beams　2005/03/09
Models of fragment production International-presentation

J. Toke, L. Sobotka

Workshop of the Consensus Initiative 2005　2005/02/12
Symmetry energy for excited nuclei produced by multifragmentation International-presentation

Symposium on Nuclear Equation of State used in Astrophysical Models, Part of the 228th ACS National Meeting　2004/08/25
重イオン衝突における動力学と統計力学

原子核三者若手夏の学校　2004/08/02
Isoscaling and symmetry energy in dynamical simulations of nuclear collisions International-presentation

Gordon Research Conference 2004 on Nuclear Chemistry　2004/06/13
AMD studies of nuclear collisions and phase transition International-presentation

Workshop of the Consensus Initiative 2004: Dynamics and Thermodynamics with Nucleonic Degrees of Freedom　2004/01/19
Isospin fractionation and isoscaling in dynamical nuclear collisions International-presentation

P. Danielewicz, W. A. Friedman, W. G. Lynch, M. B. Tsang

The 8th International Conference on Clustering Aspects of Nuclear Structure and Dynamics　2003/11/24
AMD study of nuclear collisions with high isospin asymmetry International-presentation

Institute for Nuclear Theory Workshop 02-26W, Reaction Theory for Nuclei Far From Stability　2002/09/16
AMD study of the EOS in nuclear collisions International-presentation

Gordon Research Conference 2002 on Nuclear Chemistry　2002/06/16
Compatibility of the localized wave packets and the unrestricted single particle dynamics for the cluster formation in nuclear collisions International-presentation

S. Hudan, A. Chbihi, J. D. Frankland

International Symposium on Clustering Aspects of Quantum Many-Body Systems　2001/11/12
AMD study of the EOS of asymmetric nuclear matter in nuclear collisions International-presentation

Yukawa International Seminar 2001, Physics of Unstable Nuclei　2001/11/05
Antisymmetrized molecular dynamics approach to multifragmentation International-presentation

14th Nishinomiya Yukawa Memorial Symposium: Frontiers of Nuclear Collision Dynamics　1999/11/18
Antisymmetrized molecular dynamics approach to multifragmentation International-presentation

7th International Conference on Clustering Aspects of Nuclear Structure and Dynamics　1999/06/14
Antisymmetrized molecular dynamics calculation of collisions of heavy nuclei International-presentation

XVII RCNP International Symposium on Innovative Computational Methods in Nuclear Many-Body Problems　1997/11/10
Application of antisymmetrized molecular dynamics to nucleus-nucleus collisions International-presentation

6th International Conference on Nucleus-Nucleus Collisions　1997/06/02

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Research Projects 12

Comprehensive understanding of heavy-ion collision dynamics, pion production and Delta resonance in medium

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2021/04/01 - 2025/03/31
Cluster correlations in nuclear reactions and nuclear matter studied with transport models

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2017/04/01 - 2023/03/31
Theoretical Study of Neutron Stars and Nuclear Matter

Ohnishi Akira, KUNIHIRO Teiji, NISHIZAKI Shigeru, OYAMATSU Kazuhiro, MARUYAMA Toshiki, ABUKI Hiroaki, OHASHI Yoji, SHIBAZAKI Noriaki, YAMAMOTO Yasuo, TAKATSUKA Tatsuyuki, KOHNO Michio, MIYAGAWA Takahiko, MUTO Takumi, SUMIYOSHI Kohsuke, SAGAWA Hiroyuki, SOTANI Hajime, MORITA Kenji, YAMAGATA Junko, TSUBAKIHARA Kohsuke, OHNISHI Shota, INAKURA Tsunenori, IKENO Natsumi, ISHIZUKA Chikako, LEE Tongyu

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Institution: Kyoto University

2012/06/28 - 2017/03/31

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Neutron star physics has been studied from the view points of multi-component high-density matter, neutron-rich nuclear matter, and compact star astrophysics. Achievements are published in around 370 papers, which include cooperation works with experiments such as, the prediction of the anti-K nucleus binding energy and its confirmation, determination of hyperon-nucleus potential using hyperon production data, constraint on Lambda-Lambda potential using momentum correlation from heavy-ion collisions, predictions of low-energy E1 strength and its relation to neutron skin thickness, prediction of the pi-/pi+ ratio from neutron rich nuclear collisions, constraints on symmetry energy parameters using the cold atom EOS, construction of new ab initio EOS table applicable to compact star phenomena, constraints on the symmetry energy parameter using torsional oscillation of neutron stars.
Study of dynamical and thermodynamical properties of nuclear matter with microscopic approaches

ONO Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2009 - 2012

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We performed systematic studies of phenomena and various properties in excited nuclear many-body systems such as those in heavy-ion collisions, employing microscopic dynamical models. Antisymmetrized molecular dynamics (AMD) is mainly employed but useful information was obtained by comparisons with other models. We paid special attention to the effects of equation of state (in particular the symmetry energy in isospin-asymmetric systems) and the cluster correlations. In orderto describe the strong cluster correlations in heavy-ion collisions, we introduced a new theoretical extension into AMD, which enables calculations with much higher reliability.
不安定核衝突ダイナミクスと状態方程式のアイソスピン依存性

小野章

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(B)

Institution: 東北大学

2002 - 2004

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前年度までの研究に引き続き、重イオン多重破砕反応のダイナミクスと核物質の状態方程式のアイソスピン依存性(様々な密度における対称エネルギー)との関連を、反対称化分子動力学(AMD)理論を用いて研究した。前年度までは計算の簡単なCa+Ca衝突を用いて多重破砕と状態方程式の関連を理論的に解明してきたが、今年度はSn+Sn衝突を計算し、実験データとの詳細な比較を行った。その結果、通常のAMD計算では横方向へのフラグメント放出が過小評価されていることが分かり、この問題を早急に解決すべきと判断した。原因としては、(1)理論的不定性のある核物質中での二核子衝突断面積を従来のパラメータよりも大きく選ぶべきである可能性と、(2)横方向や高エネルギー部分など位相空間密度が低い部分では軽いフラグメント(重陽子など)の直接的な生成(コアレッセンス)をAMDの時間発展の中に取り入れる必要があること、が考えられる。(1)と(2)の両方の改良した計算では、実験データのフラグメントの角分布と電荷分布が非常によく再現できることが分かり、フラグメントのアイソスピン組成やアイソスケーリング則を実験と詳細に比較することが可能となった。 (2)のコアレッセンスについては、より正確な定式化を行う必要があると考えられる。コアレッセンスを取り入れた計算では、陽子・中性子の多重度が大きく変わることが分かったので、フローにより高密度核物質の性質を探る際にも重要であるといえる。また、関連した研究として、AMDを用いて熱平衡状態を作り、カロリー曲線など統計的性質を調べた。カロリー曲線にバックベンディングが現れ、AMD計算は液相気相相転移と無矛盾であることが確認された。
Study of fusion reactions between heavy nuclei and of the synthesis of super heavy elements by a novel quantum diffusion theory

TAKIGAWA Noboru, TAZAWA Terutake, NAKATSUKASE Takashi, ONO Akira, HAGINO Kouichi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2001 - 2002

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1. We developed a new framework of the coupled-channels calculations to evaluate the cross section of heavy-ion fusion reactions at energies around the Coulomb barrier. The new method replaces the.Woods-Saxon potential in the conventional approach by the double folding potential with the M3Y force as the effective nucleon-nucleon interaction. 2. We applied the method to the ^<16>O+^<154>Sm collisions in order to test its validity, and found that the coupled channels calculations including the ground state rotational band of the target nucleus ^<154>Sm reproduce fairly well the experimental data of the fusion excitation function over a wide energy region -including the Coulomb barrier, though some improvements of the theory are required to explain the experimental fusion barrier distribution. 3. We have then examined whether the method is applicable to heavy-ion collisions between heavy nuclei, where the so called extra-push problem is involved. We studied ^<60>Ni+^<154>Sm scattering as an example and found that the calculated barrier transmission cross section well agrees with the experimental data of the total fusion-fission like cross section. 4. It is necessary to develop a theory which can quantitatively describe the process from the inside of the fusion barrier to inside of the fission barrier in order to estimate the fusion cross section between two heavy nuclei such as that for the fusion reactions to synthesize super heavy elements. A diffusion theory has been used as a promising approach to this end under the name of the fluctuation-dissipation dynamics. We have developed a novel quantum diffusion theory by paying attention to the fact that super heavy elements should be synthesized at low temperatures, where a quantum effect due to finite barrier curvature cannot be ignored. Our diffusion equation contains various terms which are absent in the standard diffusion equation by reflecting non-Markovian properties originated from the quantum effects. 5. We applied the quantum diffusion theory to the diffusion process along a potential barrier, and found that while the well known fluctuation dissipation theorem between the diffusion and dissipation coefficients holds at high energies, at low temperatures the deviation from that in the absence of the quantum effect is very different from the known deviation in the diffusion process in a potential well. 6. Through analyses with realistic parameters, we found that both quantum and non-Markpvian effects significantly modify the properties of the diffusion process in synthesizing super heavy elements compared with the results of existing theories.
天体核反応における遮蔽効果およびチャネル結合効果

滝川昇, 萩野浩一, 田澤輝武, 小野章

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 特定領域研究(A)

Institution: 東北大学

2000 - 2001

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1.遮蔽効果の初期状態依存性を明らかにするため、2準位結合ツアネル方程式を数値的に解くことによって、内部自由度が反応の初期に励起状態と基底状態にある場合の障壁透過率に対するチャネル結合効果の比較を行い、内部運動が遅い場合には、初期状態が励起状態であるか基底状態であるかに依らず、チャネル結合効果は、障壁透過率を、障壁より低いエネルギ-では増幅させ、高いエネルギーでは抑制すること、-方、早い内部運動は、基底状態から出発する場合は障壁透過確率を増幅するが、励起状態から出発する場合は、極めて低い入射エネルギーの場合を除いて、抑制することを示した。又、これらの特徴が、内部自由度空間の準位数や、振動結合型や回転結合型などチャネル結合の特徴にどのように依存するかの詳細な分析を行った。これらの結果は、初年度(平成12年度)に行った、量子トンネル効果に対する半古典的平均場理論で得た遮蔽効果の特徴を裏付けるものである。2.2準位結合チャネル計算の詳細な分析を行い、障壁中での内部自由度の遷移に伴って、空間的に変動するポテンシャルの変化(繰り込み)が起こること、特に、初期状態が励起状態にあるか、ポテンシャル障壁の前で励起が起こる場合は、この効果が著しくなることを示した。この事は、遮蔽効果の研究には、通常の静的解析とは異なる動的効果を取り入れた研究が重要である事を示している。3.環境と相互作用した巨視的自由度のポテンシャル障壁に沿った運動を、量子拡散過程の観点から定式化し、高温領域では拡散係数と散逸係数の間に良く知られた揺動散逸定理が成り立つが、量子揺らぎが優勢になる低温領域では、量子効果のない場合の揺動散逸定理からの変化は、ポテンシャルの井戸の中を運動する場合とは著しく異なる事を示した。
重イオン反応による中性子過剰核物質の状態方程式決定の理論的研究

小野章

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 奨励研究(A)

Institution: 東北大学

1999 - 2000

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核子あたりの入射エネルギーが数十から数百MeVのエネルギー領域での核衝突を反対称化分子動力学(AMD)を用いて計算し,中性子過剰核物質の状態方程式決定を目標にして,アイソスピンの非対称性に着目した研究を行った. ^<197>Au+^<197>Au衝突は,安定核同士の衝突であるが,3:2の中性子陽子比をもつため,アイソスピンの効果が期待される.前年度に,^3Heと^3Hのエネルギー差が圧縮時から膨張時におけるアイソスピンの動力学を反映していることを示したが,いっそう確実な結論を得るためには,これらの軽いクラスターの生成を精度よく,かつ,曖昧さなく記述する必要がある.そこで,AMDにおいて軽いクラスターの直接生成(コアレッセンス)を取り扱うための従来の拡張を改良し,曖昧さの少ない枠組みとした.その結果,新しい取り扱いでも前年度と同様の結果が得られることが,現在確かめられつつある. 最近,ミシガン州立大学で,例えば^<112>Sn+^<112>Snと^<124>Sn+^<124>Snを比較する実験が行われている.その結果,(N,Z)のアイソトープの生成量の二反応間の比が,(N,Z)に関して指数関数的な振る舞いをすることが指摘されている.前年度までに行った^<40>Ca+^<40>Caと^<60>Ca+^<60>Caの計算結果について同様の解析を行ったところ,実験で知られているとおり,アイソトープ比の指数関数的振る舞いが得られた.指数関数的振る舞いの傾きパラメータは,状態方程式(対称エネルギー)を反映する.今後は,実験が行われている反応の計算を進め,実験データとの比較することにより,核物質の状態方程式のアイソスピン依存性(対称エネルギーの密度依存性)に関する知見が得られると考えられる.
拡張された反対称化分子動力学による原子核破砕反応の研究

小野章

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 奨励研究(A)

Institution: 東北大学

1997 - 1998

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前年度までの研究で示されたとおり,拡張された反対称化分子動力学(AMD-V)では,波束拡散を確率的に導入することで,比較的低エネルギーの重イオン反応でのフラグメント生成をよく記述できる.しかし,^<197>Au+^<197>Au衝突のような重い重イオン反応では,入射エネルギーが比較的高い(例えば250MeV/u)場合,AMD-Vの計算でも,pの生成量をかなり過大評価し,dやtの生成量が過小評価されるという問題が残っていた.その原因は,反応の後期でのコアレッセンスが足りないためであると考え,他の部分と相互作用しなくなった部分系の基底状態の確率は一定であるという原理に基づいて,AMD-Vに確率的なコアレッセンス過程を導入した.これにより,^<197>Au+^<197>Au衝突では,入射エネルギーが250MeV/uの場合にも,あらゆるフラグメントの生成量が非常によく再現されるようになった.また,各フラグメントごとの運動エネルギーの平均値やエネルギースペクトルのデータは,集団的膨張が強いことを示しているが,これについても軟らかい状態方程式を用いたAMD-Vの計算で再現することができた. また,非対称核物質の状態方程式(対称エネルギーの密度依存性)に対する依存性にも着目した.例えば,中間エネルギーでの^<197>Au+^<197>Au衝突などでは,^3Heフラグメントの平均運動エネルギーがtフラグメントよりも20MeVも大きく,これは単純にクーロンエネルギーの効果としては説明できず,謎となっている.AMD-Vの計算では,採用する非対称核物質の状態方程式によっては,この差が得られることがわかった.また,^<60>Ca+^<60>Ca反応の計算も行ない,フラグメントの電荷分布やアイソトープ分布のほか,中性子のフローなども非対称核物質の状態方程式を反映することを示した.
Macroscopic Quantum Tunneling in Nuclear Physics

TAKIGAWA Noboru, KUYUCAK Serdar, BRINK David M., BALANTEKIN A.Baha, HAGINO Kouichi, ONO Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for international Scientific Research

Institution: TOHOKU UNIVERSITY

1997 - 1998

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1. We showed that the anharmonicity of nuclear surface vibrations strongly influences the fusion barrier distribution by studying the effects of double phonon quadrupole and octupole excitations of ^<144>Sm on the ^<16>O+^<144>Sm fusion reactions at energies below the Coulomb barrier. Using this result, we deduced a negative quadrupole moment for both first excited 2^+ and 3^- states of ^<144>Sm. We performed a similar analysis for the ^<16>O+^<148>Sm fusion reactions. 2. We studied the influence of finite width of excited states on heavy-ion fusion reactions at energies near and below the Coulomb barrier, and showed that the finite width always reduces the enhancement effect of the channel coupling irrespective of the relative importance of the spreading and escape widths. 3. We analyzed the ^<16>O+^<154>Sm, ^<186>W ^<238>U fusion reactions at low energies and showed that.beta_6- deformation, octupole as well as beta and gamma vibrations and 2 nucleon transfer reactions play important roles. 4. We studied the bremsstrahlung in alpha decay and showed that (1) all the contributions from the classical region, tunneling region, mixed region and the wall play important roles (2) the final spectrum is given by their interference and becomes much smaller than the classical value (3) the bremsstrahlung might eliminate the ambiguity in determining the potential between the alpha particle and the daughter nucleus. 5. We showed the existence of a glory-like phenomenon caused by the shadow of a nuclear rainbow in the extremely forward angular region as a novel caustic phenomenon. 6. In addition, we studied (1) isospin dependence of nuclear incompressibility (2) screening effect by bound electrons in extremely low energy nuclear reactions (3) non-adiabatic transition in crossing two-level problems in connection with fission and heavy-ion collisions (4) electron states in metal clusters and (5) fragmentation in medium energy heavy-ion collisions.
核分裂とマイクロクラスター分裂の比較研究-量子崩壊と熱崩壊の機構-

滝川昇, 阿部正典, 小野章

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 重点領域研究

Institution: 東北大学

1996 - 1996

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本研究計画は、原子核及びマイクロクラスターの量子的及び熱的崩壊の機構を比較解明する事によって、両者の類似性と異質性を明らかにする事を目的としている。マイクロクラスターの分裂に関する興味深い研究課題の一つは、多価に帯電したマイクロクラスターが核分裂によって崩壊するか、蒸発過程によって崩壊するかの境界を与える、いわゆる臨界クラスターサイズである。これまでは、バルクな系での表面張力を用いた臨界クラスターサイズの評価が行われ、臨界サイズが大きいときは、実験値を比較的よく再現することが出来た。臨界クラスターサイズが小さい場合の実験値と理論値の食い違いの原因を解明するために、我々は、表面張力のサイズ依存性を調べ、小さなマイクロクラスターでは、表面張力のクラスターサイズ依存性が無視できないことを明らかにした。この研究の中で、マイクロクラスターの物性を正しく記述するためには、相関エネルギーの正しい取扱いが必要であることに注目し、通常用いられる局所密度近似を改善して、Naクラスターに対しいわゆるGW近似による計算を行い、ホール状態のエネルギーはより深く、粒子状態のエネルギーはより高くなることを示した。現在は、これらの結果に基づくマイクロクラスターの分裂や光吸収などの研究を進めている。本研究のテーマは、マイクロクラスターの分裂と核分裂の類似性及び相違について研究することであるが、後者に関連して、その逆過程である重イオン核融合反応の研究が大いに進んだ。主な研究成果は以下のとおりである。(1)重イオン核融合反応に対する原子核の表面振動の影響においては、高次の結合効果が極めて重要である。(2)励起エネルギーが大きな入射核の表面振動は重イオン核融合反応に対する障壁分布の形には影響せず、位置をずらすたけである。(3)重イオン核融合反応に対する障壁分布は散乱核の表面振動における非調和性に極めて敏感である。
Macroscopic Quantum Tunneling in Nuclear Reactions and Fission

TAKIGAWA Noboru, ABE Masanori, SINOZUKA Tsutomu, ONO Akira

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoki University

1994 - 1996

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This project has been undertaken with the aim to develop theories and analyze data of macroscopic quantum tunneling in nuclear physics, centering on heavy-ion fusion reactions at energies near and below the Coulomb barrier and fission. Also, studies of related subjects such as elastic heavy-ion scattering, heavy-ion collisions induced by unstable nuclei, astrophysical nuclear reactions, nuclear structure in terms of relativistic mean field theory, medium energy heavy-ion collisions and microcluster physics have been undertaken. The main achievements are as follows : Concerning heavy-ion fusion reactions, we clarified the improtance of higher order coupling effects through the coupled-channels analyzes of the ^<64>Ni+92,96Zr and ^<16>O+^<112>Cd, ^<144>Sm fusion reactions, We also showed the important role playd by the anharmonicity in the vibrational coupling by describing the fusion of ^<16>O+^<112>Cd, ^<144>Sm with the interacting boson model. As an important consequence, our study shows that fusion data provide very useful information on anharmonic properties of nuclear vibrational modes of excitation and the sign of deformation of nuclei. Concerning the quantum tunneling in systems with many degrees of freedom, we have shown the importance of the mass renormalization in adiabatic quantum tunneling and developed a dissipation factor method to calculate the rate of fast quantum tunneling by taking the effects of a finite excitation energy of the environmental degrees of freedom. We also developed a method, called the dynamical norm method, which can be applied to quantitatively estimating the tunneling rate for a wide range of non-adiabaticity. As for fission, using ^<234>U as an example and using the dynamical norm method we have shown that the life time of spontaneous fission becomes very short due to the existence of nuclear intrinsic degrees of freedom. We also studied the transition of the fission mechanism from quantum tunneling to thermal decay, and have predicted that the fission width gets significantly reduced by the temperature dependence of the pairing cap energies near the critical temperature for the phase transition from superfluid to normal states of nuclei.

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