Cluster-gas-like states in finite nuclei

• Project/Area Number: 19540295
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: HORIUCHI Hisashi Osaka University, 核物理研究センター, 協同研究員 (60027349)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: クラスターガス / ボーズ凝縮 / α凝縮状態 / 1粒子密度行列 / 電気単極遷移 / THSR関数 / 4α直交条件模型 / α粒子の非弾性励起反応 / 4αボーズ凝縮状態 / 16○の第6の0+状態 / 内部座標の1粒子密度行列 / Jacobi座標系 / Monopole励起 / Bayman-Bohr定理 / 原子核のヤヌス的性格 / 4αのボーズ凝縮状態 / 160の第6の0+状態 / 内部座標による密度行列 / 密度行列の固有値 / Baymann-Bohr定理

Research Abstract

Orthogonality condition model calculation of 4 alpha clusters was performed for 0+ states of 16O. The 6^<th> 0+ state was predicted as a 4 alpha Bose condensed state. Reproduction of data was good. GCM calculation with 4 alpha THSR wave functions incorporating resonance boundary condition also yielded 4 alpha Bose condensed state which has good correspondence with OCM result. Explanation was made about the large monopole strength between cluster-gas states and ground state.

Research Products

• [Journal Article] Concepts of nuclear alpha-particle condensation (2009)
  • Author(s): Y. Funaki, H. Horiuchi, W. von Oertzen, G. Roepke, P. Schuck, A. Tohsaki, T. Yamada
  • Journal Title: Physical Review C 80 Pages: 1-14
  • Peer Reviewed
• [Journal Article] Internal One-Particle Density Matrix for Bose Einstein Condensates with Finite Number of Particles in a Harmonic Potential Field (2009)
  • Author(s): T. Yamada, Y. Funaki, H. Horiuchi, G. Roepke, P. Schuck, A. Tohsaki
  • Journal Title: Physical Review C 79
  • Peer Reviewed
• [Journal Article] Internal One-Particle Density Matrix for Bose-Einstein Condensates with Finite Number of Particles in a Harmonic Potential (2009)
  • Author(s): T.Yamada
  • Journal Title: Physical Review C 79
  • Peer Reviewed
• [Journal Article] Concepts of nuclear alpha-particle condensation (2009)
  • Author(s): Y.Funaki
  • Journal Title: Physical Review C 80
  • Peer Reviewed
• [Journal Article] Monopole excitation to cluster states (2008)
  • Author(s): T. Yamada, Y. Funaki, H. Horiuchi, K. Ikeda, A. Tohsaki
  • Journal Title: Progress of Theoretical Physics 120 Pages: 1139-1167
  • NAID: 110007021701
  • Peer Reviewed
• [Journal Article] Criterion for Bose-Einstein condensation in traps and self-bound systems (2008)
  • Author(s): T. Yamada, Y. Funaki, H. Horiuchi, G. Roepke, P. Schuck, A. Tohsaki
  • Journal Title: Physical Review A 78 Pages: 35603-35606
  • Peer Reviewed
• [Journal Article] Alpha-particle condensation in 16O studied with a full four-body OCM calculation (2008)
  • Author(s): Y. Funaki, T. Yamada, H. Horiuchi, G. Roepke, P. Schuck, A. Tohsaki
  • Journal Title: Physical Review Letters 101 Pages: 82502-82505
  • Peer Reviewed
• [Journal Article] Density-induced suppression of the alpha-particle condensate in nuclear matter and the structure of alpha-cluster states in nuclei (2008)
  • Author(s): Y. Funaki, H. Horiuchi, G. Roepke, P. Schuck, A. Tohsaki, T. Yamada
  • Journal Title: Physical Review C 77
  • Peer Reviewed
• [Journal Article] Density-induced suppression of the alpha-particle condensate in nuclear matter and the structure of alpha-cluster states in nuclei (2008)
  • Author(s): Y. Funaki
  • Journal Title: Physical Review C 77
  • Peer Reviewed
• [Journal Article] Semiclassical Phase Equivalent Deep and shallow Potentials (2008)
  • Author(s): H. Horiuchi
  • Journal Title: Journal of Physics G 35 Pages: 85103-85114
  • Peer Reviewed
• [Journal Article] Alpha-particle condensation in 160 studied with a full four-body OCM calculation (2008)
  • Author(s): Y. Funaki
  • Journal Title: Physical Review Letters 101 Pages: 82502-82505
  • Peer Reviewed
• [Journal Article] Criterion for Bose-Einstein condensation in traps and self-bound systems (2008)
  • Author(s): T. Yamada
  • Journal Title: Physical Review A 78 Pages: 35603-35606
  • Peer Reviewed
• [Journal Article] Monopole excitation to cluster states (2008)
  • Author(s): T. Yamada
  • Journal Title: Progress of Theoretical Physics 120 Pages: 1139-1167
  • Peer Reviewed
• [Journal Article] Clustering and triaxial deformations of 40Ca (2007)
  • Author(s): Y. Taniguchi, M. Kimura, Y. Kanada-En'yo, H. Horiuchi
  • Journal Title: Physical Review 76
  • Peer Reviewed
• [Journal Article] New candidate for an alpha cluster condensed state in 16O(alpha, alpha') at 400 MeV (2007)
  • Author(s): T. Wakasa, E. Ihara, K. Fujita, Y. Funaki, K. Hatanaka, H. Horiuchi, M. Ith, J. Kamiya, G. Roepke, H. Sakaguchi, N. Sakamoto, Y. Sakemi, P. Schuck, Y. Shimizu M. Takashina, S. Terashima, A. Tohsaki, M. Uchida, H.P. Yoshida, M. Yosoi
  • Journal Title: Physics Letters B 635 Pages: 173-177
  • Peer Reviewed
• [Journal Article] Alpha particle condensation in nuclear systems (2007)
  • Author(s): Y. Funaki, H. Horiuchi, G. Roepke, P. Schuck, A. Tohsaki, T. Yamada
  • Journal Title: Nuclear Physics News. 17 Pages: 11-18
  • Peer Reviewed
• [Journal Article] New candidate for an alpha cluster condensed state in 16O(alpha, alpha') at 400 MeV (2007)
  • Author(s): T. Wakasa, E. Ihara, K. Fujita, Y. Funaki, K. Hatanaka, H. Horiuchi, 他14名
  • Journal Title: Phyics Letters B 635 Pages: 173-177
  • Peer Reviewed
• [Journal Article] Clustering and triaxial deformations of 40Ca. (2007)
  • Author(s): Y. Taniguchi, M. Kimura, Y. Kanada-En'yo, and H. Horiuchi
  • Journal Title: Physical Review C 76
  • Peer Reviewed
• [Journal Article] Alpha particle condensation in nuclear systems (2007)
  • Author(s): Y. Funaki, H. Horiuchi, G. Roepke, P. Schuck A. Tohsaki, and T. Yamada
  • Journal Title: Nuclear Physics News 17 Pages: 11-18
  • Peer Reviewed
• [Presentation] 共鳴の条件を取り入れた16Oにおける4α凝縮状態へのアプローチ」、日本物理学会第65回年会、201年3月20日、岡山大学津島キャンパス。(2)東崎昭弘(登壇者)、「(3α)-α系の微視的研究 (2010)
  • Author(s): 船木靖郎(登壇者)
  • Organizer: 日本物理学会第65回年会
  • Place of Presentation: 岡山大学津島キャンパス。
  • Year and Date: 2010-03-20
• [Presentation] (3α)-α系の微視的研究 (2010)
  • Author(s): 東崎昭弘(登壇者)
  • Organizer: 日本物理学会第65回年会
  • Place of Presentation: 岡山大学津島キャンパス。
  • Year and Date: 2010-03-20
• [Presentation] 共鳴の条件を取り入れた16Oにおける4α凝縮状態へのアプローチ (2010)
  • Author(s): 船木靖郎
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-20
• [Presentation] (3α)-α系の微視的研究 (2010)
  • Author(s): 東崎昭弘
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-20
• [Presentation] Alpha-cluster states and 4 alpha-particle Bose condensate in 16O (2009)
  • Author(s): Y. Fnaki(登者)
  • Organizer: KGU Yokohama Autumn School of Nuclear Physics
  • Place of Presentation: Kanto Gakuin University, Yokohama
  • Year and Date: 2009-10-09
• [Presentation] Structure change from shell-mode-like ground state to cluster states (2009)
  • Author(s): H. Horiuchi
  • Organizer: 12th International Conference on Nuclear Reaction Mechanisms
  • Place of Presentation: Varenna, Italy.
  • Year and Date: 2009-06-18
• [Presentation] Alpha particle clustering in nuclei and 4-alpha particle condensation in 16O (2009)
  • Author(s): Y. Funaki(登壇者)
  • Organizer: 12th International Conference on Nuclear Reaction Mechanisms
  • Place of Presentation: Varenna, Italy.
  • Year and Date: 2009-06-16
• [Presentation] 微視的アルファ凝縮波動関数の性質 (2009)
  • Author(s): 東崎昭弘(登壇者)
  • Organizer: 日本物理学会第会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] 軽い核におけるモノポール遷移とクラスター構造 (2009)
  • Author(s): 山田泰一(登壇者)
  • Organizer: 日本物理学会第64回年会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-28
• [Presentation] Microscopic wavefunction of alpha condensation (2008)
  • Author(s): A. Tohsaki(登壇者)
  • Organizer: KGU Yokohama Autumn School of Nuclear Physics
  • Place of Presentation: Kanto Gakuin University
  • Year and Date: 2008-10-09
• [Presentation] Alpha clustering and monopole strengths in light nuclei (2008)
  • Author(s): T. Yamada(登壇者)
  • Organizer: KGU Yokohama Autumn School of Nuclear Physics
  • Place of Presentation: Kanto Gakuin University, Yokohama
  • Year and Date: 2008-10-09
• [Presentation] Alpha-particle condensed state in 16O (2008)
  • Author(s): Y. Funaki(登壇者)
  • Organizer: Franco-Japanese Symposium "New Paradigms in Nuclear Physics"
  • Place of Presentation: Paris, France
  • Year and Date: 2008-10-01
• [Presentation] 共鳴群法による核子・アルファ凝縮状態系の研究 (2008)
  • Author(s): 東崎昭弘(登壇者)
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-20
• [Presentation] α凝縮模型、直交条件模型を用いた16Oの4α凝縮状態系の研究 (2008)
  • Author(s): 船木靖郎(登壇者)
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-20
• [Presentation] 共鳴群法による「核子・アルファ凝縮状態系」の研究 (2008)
  • Author(s): 東崎 昭弘
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-20
• [Presentation] α凝縮模型、直交条件模型を用いた16○4α凝縮状態の研究 (2008)
  • Author(s): 船木 靖郎
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 山形大学小白川キャンパス
  • Year and Date: 2008-09-20
• [Presentation] Present status of alpha-particle condensate states in self-conjugate 4n nuclei (2008)
  • Author(s): Y. Funaki(登壇者)
  • Organizer: Workshop on the status of art in nuclear cluster physics
  • Place of Presentation: Strasbourg, France
  • Year and Date: 2008-05-14
• [Presentation] 16Oにおける4αクラスター凝縮状態 (2008)
  • Author(s): 船木靖郎(登壇者)
  • Organizer: 日本物理学会第63回年会
  • Place of Presentation: 近畿大学本部キャンパス
  • Year and Date: 2008-03-23
• [Presentation] アルファ凝縮と核子 (2008)
  • Author(s): 東崎昭弘(登壇者)
  • Organizer: 日本物理学会第63回年会
  • Place of Presentation: 近畿大学本部キャンパス
  • Year and Date: 2008-03-23
• [Presentation] アルファ凝縮と核子の相互作用 (2007)
  • Author(s): 東崎昭弘(登壇者)
  • Organizer: 日本物理学会第62回年会
  • Place of Presentation: 北海道大学札幌ス
  • Year and Date: 2007-09-21
• [Presentation] アルファ凝縮と核子の相互作用 (2007)
  • Author(s): 鈴木昭弘、堀内昶、船木靖郎、山田泰一、P. Schuck、G. Roepke
  • Organizer: 日本物理学会第62回年会
  • Place of Presentation: 北海道大学札幌キャンパス
  • Year and Date: 2007-09-21
• [Presentation] 16Oの励起状態に現れるクラスター構造 (2007)
  • Author(s): 船木靖郎、山田泰一、P. Schuck、堀内昶、東崎昭弘、G. Roepke
  • Organizer: 日本物理学会第62回年会
  • Place of Presentation: 北海道大学札幌キャンパス
  • Year and Date: 2007-09-21
• [Presentation] 原子核の励起状態の理論計算における有効相互作用依存性 (2007)
  • Author(s): 谷口億宇、木村真明、延与佳子、堀内昶
  • Organizer: 日本物理学会第62回年会
  • Place of Presentation: 北海道大学札幌キャンパス
  • Year and Date: 2007-09-21
• [Presentation] Outlook and future perspectives (2007)
  • Author(s): H. Horiuchi
  • Organizer: 9th International Cluster Conference
  • Place of Presentation: Stratford upon Avon, England
  • Year and Date: 2007-09-07
• [Presentation] Outlook and future perspectives (Summary talk) (2007)
  • Author(s): H. Horiuchi
  • Organizer: Cluster'07
  • Place of Presentation: Stratford upon Avon, England
  • Year and Date: 2007-09-07
• [Presentation] Alpha clster states and 4 alpha-particle Bose condensates in 16O (2007)
  • Author(s): Y. Fnaki(登者)
  • Organizer: 9th International Cluster Conference
  • Place of Presentation: Stratford upon Avon, England
  • Year and Date: 2007-09-04
• [Presentation] 16Oの励起状態に現れるクラスター構造 (2007)
  • Author(s): 船木靖郎(登壇者)
  • Organizer: 日本物理学会第62回年会
  • Place of Presentation: キャンパス
• [Remarks] ホ一ムペ一ジ