Cluster correlations in nuclear reactions and nuclear matter studied with transport models

• Project/Area Number: 17K05432
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Tohoku University
• Principal Investigator: Ono Akira 東北大学, 理学研究科, 助教 (20281959)
• Project Period (FY): 2017-04-01 – 2024-03-31
• Project Status: Completed (Fiscal Year 2023)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
• Keywords: クラスター / 重イオン衝突 / 輸送理論 / 反対称化分子動力学 / 状態方程式 / 対称エネルギー / 波束 / 位相空間 / π中間子生成 / 輸送模型 / ストッピング / Δ共鳴 / パウリブロッキング / クラスター相関 / 核物質の状態方程式

Outline of Final Research Achievements

Using the antisymmetrized molecular dynamics (AMD) model, which is a microscopic theory (transport model) to solve the time evolution of nucleon many-body systems, we have performed studies of heavy-ion collisions and other reactions, focusing in particular on the importance of clusters. By comparing theoretical calculations with experimental data, we have established qualitative and quantitative understandings of nuclear reaction dynamics and extracted some information on the equation of state for various densities and degrees of proton-neutron asymmetry, while clarifying various roles played by cluster correlations. In addition, through international collaborations, comparisons with other transport model calculations have been made to find the source of the theoretical uncertainties and to improve the model and its reliability.

Academic Significance and Societal Importance of the Research Achievements

国内外の加速器施設で行われる重イオン衝突実験では、反応過程で様々な密度や温度の状態が実現するが、その性質（状態方程式）は、中性子星や超新星爆発のような天体現象を理解するためにも不可欠な情報である。本研究で実施したような理論計算は、地上実験での微視的な反応と巨視的な天体現象を結びつけるために重要な役目を果たす。また、量子力学の法則に従う多体系の複雑な時間発展について、クラスター相関等を含め如何に扱い理解するかという問題は、原子核物理に限らず、様々な階層の物理において重要な課題である。

Research Products

• [Int'l Joint Research] Michigan State University/Texas A&M University(米国)
• [Int'l Joint Research] Shanghai Advanced Research Institute/China Institute of Atomic Energy/Sun Yat-sen University(中国)
• [Int'l Joint Research] University of Munich/GSI(ドイツ)
• [Int'l Joint Research] INFN-LNS(イタリア)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research] INFN-LNS(イタリア)
• [Int'l Joint Research] Shanghai Advanced Research Institute/China Institute of Atomic Energy/Sun Yat-sen University(中国)
• [Int'l Joint Research] Michigan State University/Texas A&M University(米国)
• [Int'l Joint Research] University of Munich/GSI(ドイツ)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research]
• [Int'l Joint Research] INFN Firenze/INFN-LNS(イタリア)
• [Int'l Joint Research] Shangai Advanced Research Institute/China Institute of Atomic Energy/Sun Yat-sen University(中国)
• [Int'l Joint Research] Michigan State University/Texas A&M University(米国)
• [Int'l Joint Research] University of Munich/GSI(ドイツ)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research] INFN Firenze/INFN-LNS(イタリア)
• [Int'l Joint Research] Shanghai Advanced Research Institute/China Institute of Atomic Energy/Sun Yat-sen University(中国)
• [Int'l Joint Research] Michigan State University/Texas A&M University/Lawrence Berkeley National Laboratory(米国)
• [Int'l Joint Research] University of Munich/GSI(ドイツ)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research]
• [Int'l Joint Research] Shanghai Advanced Research Institute/China Institute of Atomic Energy/Sun Yat-sen University(中国)
• [Int'l Joint Research] Michigan State University/Texas A&M University/Lawrence Berkeley National Laboratory(米国)
• [Int'l Joint Research] INFN-LNS/INFN Firenze(イタリア)
• [Int'l Joint Research] University of Munich/GSI(ドイツ)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research]
• [Int'l Joint Research] China Institute of Atomic Energy/Shanghai Institute of Applied Physics/Institute of Modern Physics(中国)
• [Int'l Joint Research] Michigan State University/Texas A&M University(米国)
• [Int'l Joint Research] INFN-LNS/INFN Firenze(イタリア)
• [Int'l Joint Research] Ludwig-Maximilians-University Munich/Johann Wolfgang Goethe University/Universitaet Giessen(ドイツ)
• [Int'l Joint Research] IFIN-HH(ルーマニア)
• [Int'l Joint Research]
• [Journal Article] Mean-field dependence of fragment-production cross sections in heavy-ion induced reactions calculated by antisymmetrized molecular dynamics (2024)
  • Author(s): Mukobara Yuta、Sanami Toshiya、Ono Akira、Inakura Tsunenori、Katabuchi Tatsuya、Chiba Satoshi、Ishizuka Chikako
  • Journal Title: Journal of Nuclear Science and Technology Volume: 61 Issue: 2 Pages: 206-217
  • DOI: 10.1080/00223131.2023.2287102
  • Peer Reviewed / Open Access
• [Journal Article] Comparing pion production in transport simulations of heavy-ion collisions at 270A MeV under controlled conditions (2024)
  • Author(s): Xu Jun、Wolter Hermann、Colonna Maria、Cozma Mircea Dan、Danielewicz Pawel、Ko Che Ming、Ono Akira、Tsang ManYee Betty、Zhang Ying-Xun、et al.
  • Journal Title: Physical Review C Volume: 109 Issue: 4
  • DOI: 10.1103/physrevc.109.044609
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Examination of cluster production in excited light systems at Fermi energies from new experimental data and comparison with transport model calculations (2023)
  • Author(s): Frosin C.、Piantelli S.、Casini G.、Ono A.、Camaiani A.、et al.
  • Journal Title: Physical Review C Volume: 107 Issue: 4
  • DOI: 10.1103/physrevc.107.044614
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Collision integral with momentum-dependent potentials and its impact on pion production in heavy-ion collisions (2023)
  • Author(s): Ikeno Natsumi、Ono Akira
  • Journal Title: Physical Review C Volume: 108 Issue: 4 Pages: 044601-044601
  • DOI: 10.1103/physrevc.108.044601
  • Peer Reviewed / Open Access
• [Journal Article] Transport model comparison studies of intermediate-energy heavy-ion collisions (2022)
  • Author(s): Wolter Hermann、Colonna Maria、Cozma Dan、Danielewicz Pawel、Ko Che Ming、Kumar Rohit、Ono Akira、Tsang ManYee Betty、Xu Jun、Zhang Ying-Xun、et al.
  • Journal Title: Progress in Particle and Nuclear Physics Volume: 125 Pages: 103962-103962
  • DOI: 10.1016/j.ppnp.2022.103962
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Isoscaling in central Sn+Sn collisions at 270 MeV/u (2022)
  • Author(s): Lee J. W.、Tsang M. B.、Tsang C. Y.、Wang R.、Barney J.、Estee J.、Isobe T.、Kaneko M.、Kurata-Nishimura M.、Lynch W. G.、Murakami T.、Ono A.、Souza S. R.、et al.
  • Journal Title: The European Physical Journal A Volume: 58 Issue: 10 Pages: 201-201
  • DOI: 10.1140/epja/s10050-022-00851-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Phase-space consideration on barrier transmission in a time-dependent variational approach with superposed wave packets (2022)
  • Author(s): Ono Akira
  • Journal Title: Physics Letters B Volume: 826 Pages: 136931-136931
  • DOI: 10.1016/j.physletb.2022.136931
  • Peer Reviewed / Open Access
• [Journal Article] Comparison of heavy-ion transport simulations: Mean-field dynamics in a box (2021)
  • Author(s): Colonna Maria、Zhang Ying-Xun、Wang Yong-Jia、Cozma Dan、Danielewicz Pawel、Ko Che Ming、Ono Akira、Tsang Manyee Betty、Wang Rui、Wolter Hermann、Xu Jun、Zhang Zhen et al.
  • Journal Title: Physical Review C Volume: 104 Issue: 2
  • DOI: 10.1103/physrevc.104.024603
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Rapidity distributions of Z=1 isotopes and the nuclear symmetry energy from Sn+Sn collisions with radioactive beams at 270 MeV/nucleon (2021)
  • Author(s): Kaneko M.、Murakami T.、Isobe T.、Kurata-Nishimura M.、Ono A.、Ikeno N.、Barney J.、Cerizza G.、Estee J.、Jhang G.、Lee J.W.、Lynch W.G.、Santamaria C.、Tsang C.Y.、Tsang M.B.、Wang R.、Ahn D.S.、Atar L.、Aumann T.、Baba H.、Kondo Y., 他
  • Journal Title: Physics Letters B Volume: 822 Pages: 1366811-8
  • DOI: 10.1016/j.physletb.2021.136681
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Isospin diffusion measurement from the direct detection of a quasiprojectile remnant (2021)
  • Author(s): A. Camaiani, G. Casini, S. Piantelli, A. Ono, et al.
  • Journal Title: Physical Review C Volume: 103 Issue: 1
  • DOI: 10.1103/physrevc.103.014605
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Isospin transport phenomena for the systems Kr80+Ca40,48 at 35 MeV/nucleon (2021)
  • Author(s): S. Piantelli, G. Casini, A. Ono, et al.
  • Journal Title: Physical Review C Volume: 103 Issue: 1
  • DOI: 10.1103/physrevc.103.014603
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Symmetry energy investigation with pion production from Sn+Sn systems (2021)
  • Author(s): 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, et al., M. Colonna, D. Cozma, P. Danielewicz, H. Elfner, N. Ikeno, C.M. Ko, J. Mohs, D.Oliinychenko, A. Ono, J. Su, Y.J. Wang, H. Wolter, J. Xu, Y.X. Zhang, Z. Zhang
  • Journal Title: Physics Letters B Volume: 813 Pages: 136016-136016
  • DOI: 10.1016/j.physletb.2020.136016
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Impacts of Cluster Correlations on Heavy-Ion Collision Dynamics (2020)
  • Author(s): Akira Ono
  • Journal Title: JPS Conference Proceedings Volume: 32
  • DOI: 10.7566/jpscp.32.010076
  • Peer Reviewed / Open Access
• [Journal Article] Neutron-Proton Dynamics and Pion Production in Heavy-ion Collisions by the AMD+JAM Approach (2020)
  • Author(s): Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi
  • Journal Title: JPS Conference Proceedings Volume: 32 Pages: 010067-010067
  • DOI: 10.7566/jpscp.32.010067
  • Peer Reviewed / Open Access
• [Journal Article] Influence of fast emissions and statistical de-excitation on the isospin transport ratio (2020)
  • Author(s): A. Camaiani, S. Piantelli, A. Ono, et al.
  • Journal Title: Physical Review C Volume: 102 Issue: 4
  • DOI: 10.1103/physrevc.102.044607
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effects of cluster correlations on fragment emission in C12+C12 at 50 MeV/nucleon (2020)
  • Author(s): R. Han, Z. Chen, R. Wada, A. Ono, G. Tian, F. Shi, X. Zhang, B. Liu, H. Sun
  • Journal Title: Physical Review C Volume: 102 Issue: 6
  • DOI: 10.1103/physrevc.102.064617
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effects of Pauli blocking on pion production in central collisions of neutron-rich nuclei (2020)
  • Author(s): Natsumi Ikeno, Akira Ono, Yasushi Nara, Akira Ohnishi
  • Journal Title: Phys. Rev. C Volume: 101 Issue: 3 Pages: 34607-34607
  • DOI: 10.1103/physrevc.101.034607
  • Peer Reviewed / Open Access
• [Journal Article] Dynamical fission of the quasiprojectile and isospin equilibration for the system 80Kr + 48Ca at 35 MeV/nucleon (2020)
  • Author(s): S. Piantelli, G. Casini, A. Ono, et al.
  • Journal Title: Phys. Rev. C Volume: 101 Issue: 3
  • DOI: 10.1103/physrevc.101.034613
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Comparison between calculations with the AMD code and experimental data for peripheral collisions of 93Nb + 93Nb, 116Sn at 38 MeV/nucleon (2019)
  • Author(s): S. Piantelli, A. Olmi, P. R. Maurenzig, A. Ono, M. Bini, G. Casini, G. Pasquali, A. Mangiarotti, G. Poggi, A. A. Stefanini, S. Barlini, A. Camaiani, C. Ciampi, C. Frosin, P. Ottanelli, and S. Valdre
  • Journal Title: Phys. Rev. C Volume: 99 Issue: 6
  • DOI: 10.1103/physrevc.99.064616
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Comparison of heavy-ion transport simulations: Collision integral with pions and Δ resonances in a box (2019)
  • Author(s): Akira Ono, Jun Xu, Maria Colonna, Pawel Danielewicz, Che Ming Ko, Manyee Betty Tsang, Yong-Jia Wang, Hermann Wolter, Ying-Xun Zhang, et al.
  • Journal Title: Phys. Rev. C Volume: 100 Issue: 4
  • DOI: 10.1103/physrevc.100.044617
  • NAID: 120006956356
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dynamics of clusters and fragments in heavy-ion collisions (2019)
  • Author(s): Akira Ono
  • Journal Title: Prog. Part. Nucl. Phys. Volume: 105 Pages: 139-179
  • DOI: 10.1016/j.ppnp.2018.11.001
  • Peer Reviewed
• [Journal Article] Cluster correlation and fragment emission in 12C + 12C at 95 MeV/nucleon (2018)
  • Author(s): G. Tian, Z. Chen, R. Han, F. Shi, F. Luo, Q. Sun, L. Song, X. Zhang, G. Q. Xiao, R. Wada, and A. Ono
  • Journal Title: Physical Review C Volume: 97 Issue: 3
  • DOI: 10.1103/physrevc.97.034610
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Comparison of heavy-ion transport simulations: Collision integral in a box (2018)
  • Author(s): Ying-Xun Zhang, Yong-Jia Wang, Maria Colonna, Pawel Danielewicz, Akira Ono, Manyee Betty Tsang, Hermann Wolter, Jun Xu et al.
  • Journal Title: Physical Review C Volume: 97 Issue: 3 Pages: 034625-034625
  • DOI: 10.1103/physrevc.97.034625
  • NAID: 120006497339
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 分子動力学法における量子統計性 (2024)
  • Author(s): 小野章
  • Organizer: 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」
  • Invited
• [Presentation] Heavy-ion collisions to study compressed nuclear matter (2023)
  • Author(s): Akira Ono
  • Organizer: RIKEN Workshop: Giant monopole resonance and related topics
  • Int'l Joint Research / Invited
• [Presentation] Collision terms with energy conservation in AMD and sJAM (2023)
  • Author(s): Akira Ono
  • Organizer: RIKEN Workshop: Equation of State of Dense Nuclear Matter at RIBF and FRIB
  • Int'l Joint Research / Invited
• [Presentation] When and where are clusters formed in expanding systems? (2023)
  • Author(s): Akira Ono
  • Organizer: NuSYM23: XIth International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research
• [Presentation] EOS from expanding and clusterizing matter in heavy-ion collisions (2023)
  • Author(s): Akira Ono
  • Organizer: Workshop on Equation of State of Dense Nuclear Matter, during DNP-JPS Joint Meeting
  • Int'l Joint Research / Invited
• [Presentation] Exploring EOS in heavy-ion collisions with transport models (2022)
  • Author(s): Akira Ono
  • Organizer: Pioneering Session on the Equation of State of Nuclaer Matter, Spring Meeting of the Korean Physical Society
  • Int'l Joint Research / Invited
• [Presentation] 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 (2021)
  • Author(s): 小野章，池野なつ美
  • Organizer: 日本物理学会 2021 年秋季大会
• [Presentation] 重イオン衝突におけるπ中間子生成と高密度対称エネルギー (2021)
  • Author(s): 池野なつ美，小野章
  • Organizer: 日本物理学会 2021 年秋季大会
• [Presentation] Light clusters in dynamic evolution of heavy-ion collisions (2021)
  • Author(s): A. Ono
  • Organizer: NuSYM21: International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] Transport model approach for clusters in heavy-ion collision dynamics (2021)
  • Author(s): A. Ono
  • Organizer: IWM-EC 2021: International Workshop on Multi-facets of EOS and Clustering
  • Int'l Joint Research / Invited
• [Presentation] Pauli and cluster correlations (2019)
  • Author(s): Akira Ono
  • Organizer: ECT* Workshop "Challenges to Transport Theory for Heavy-Ion Collisions"
  • Int'l Joint Research / Invited
• [Presentation] AMD+JAM and pion homework (2019)
  • Author(s): Akira Ono
  • Organizer: Meeting on Heavy-Ion Transport Code Comparison
  • Int'l Joint Research / Invited
• [Presentation] Effects of cluster correlations and symmetry energy in heavy-ion collisions (2019)
  • Author(s): Akira Ono
  • Organizer: NuSYM2019: 9th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] Pauli blocking effects on pion production in AMD+JAM approach (2018)
  • Author(s): Akira Ono
  • Organizer: International Workshop on Nuclear Dynamics in Heavy-Ion Reactions (IWND2018)
  • Int'l Joint Research / Invited
• [Presentation] Interplay between cluster correlations and collision dynamics (2018)
  • Author(s): Akira Ono
  • Organizer: NuSYM18: 8th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] Summary of HW3 results (2018)
  • Author(s): Akira Ono
  • Organizer: Transport Workshop 2018
  • Int'l Joint Research
• [Presentation] Pauli blocking effects on pion production in heavy-ion collisions (2018)
  • Author(s): Natsumi Ikeno
  • Organizer: NuSYM18: 8th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] Impacts of cluster correlations on heavy-ion collision dynamics (2018)
  • Author(s): Akira Ono
  • Organizer: NN2018: 13th International Conference on Nucleus-Nucleus Collisions
  • Int'l Joint Research
• [Presentation] 輸送模型計算におけるπ生成 (2018)
  • Author(s): 小野章
  • Organizer: 新学術領域「中性子星核物質」理論班主催研究会2018
• [Presentation] Light clusters and light nuclei in collision dynamics (2017)
  • Author(s): Akira Ono
  • Organizer: 7th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] Status of HW3 -- Pion Production (2017)
  • Author(s): Akira Ono
  • Organizer: 7th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research
• [Presentation] Pauli blocking effects on pion production in central collisions of neutron-rich nuclei (2017)
  • Author(s): Natsumi Ikeno
  • Organizer: 7th International Symposium on Nuclear Symmetry Energy
  • Int'l Joint Research / Invited
• [Presentation] 中性子過剰な原子核衝突におけるπ中間子生成に対するパウリブロッキング効果 (2017)
  • Author(s): 池野なつ美，小野章，奈良寧，大西明
  • Organizer: 日本物理学会2017年秋季大会