Study of New-type Cluster Structure of Atomic Nuclei

新型原子核团簇结构的研究

• 批准号: 16540248
• 负责人: HORIUCHI Hisashi
• 金额: $ 2.18万
• 依托单位: Osaka University (2006)Kyoto University (2004-2005)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540248/
• 关键词: neutron-rich nuclei; AMD; di-neutron; 3-alpha Bose condensed state; 4-alpha Bose condensed state; 4-alpha orthogonality condition model; resonance state; superdeformed state; 非弾性電子散乱; Hoyle状態; ^<12>C+αのクラスター構造; 直交条件模型; 新ACCC法; Skyrme HF計算; ク

Corresponding intimately to the recent research trend, we investigated various new-types of cluster structure in wide region of the nuclear chart.Our study was made for three major subjects, "Cluster structure in neutron-rich nuclei", "Gas states of clusters", and "Superdeformation and cluster structure".For the subject "Cluster structure in neutron-rich nuclei", " Neutron-rich Ne isotopes studied with AMD (antisymmetrized molecular dynamics) " was the first theme pursuied by summarizing the former studies before 2004. The new theme for this subject was " Study of di-neutron cluster correlation " and we developed a new theoretical formalism which combines the use of the condensed wave function of di-neutron cluster and the AMD.For the subject "Gas states of clusters" which was the central subject of this research project, we intensively pursuied " Study of Bose-cindensed states of alpha clusters in 12C and 160 " with close collaboration with experimentalists. For 12C our study reached … More the stage where the existence of 3-alpha condensed state and its excited states was confirmed with high reliability. For 160, we initiated the study by the use of the 4-alpha orthogonality condition model and identified cadidates of the 4-alpha condensed state in the vicinity of the 4-alpha breakup threshold. In these studies, we constructed a new theoretical method to treat resonances with wide width and utilized it extensively for our actual analyses.For the subjects, "Superdeformation and cluster structure", "' Study of the relation between superdeformed states in 32S and 160+160 molecular states " was the first theme pursuied by summarizing the former studies before 2004. The main theme for this subject was " Study of superdefoed states and cluster states in 40Ca and 44Ti ". We clarified the mutual penetration of mean-field-like structure and cluste structure and also the coexistence of these two structures which result in various types of ground and excited states. For these studies we developed " New method of variational calculation with a newly invented constraint for the cluster structure " and utilized it extensively, for actual analyses. We also made a study on " Cluster components contained in the Hartree-Fock wave functions ". Less

紧扣近年来的研究趋势，我们在核图的广阔区域内研究了各种新型的团簇结构。我们的研究主要围绕“富中子核团簇结构”、“团簇的气体态”三个课题进行。 ，以及“超变形和团簇结构”。对于“富中子核中的团簇结构”主题，“用AMD（反对称分子动力学）研究富中子氖同位素”是第一个主题通过总结2004年之前的研究，本课题的新主题是“双中子团簇相关性的研究”，我们发展了一种新的理论形式，结合了双中子团簇的凝聚波函数和AMD的使用。作为本研究项目的中心课题“团簇的气体态”，我们集中开展了“12C和160中α团簇的玻色稠密态的研究”通过与实验学家的密切合作，我们的研究达到了高度可靠地证实 3-α 凝聚态及其激发态存在的阶段。对于 160，我们通过使用 4-α 正交性开始了研究。在这些研究中，我们构建了一种新的理论方法来处理宽宽度的共振。课题方面，“超变形与团簇结构”、“'32S与160+160分子态超变形态关系的研究”是总结2004年以前的研究成果而追求的第一个主题本课题的主题是“40Ca和44Ti中超消散态和团簇态的研究”，阐明了类平均场结构和团簇态的相互渗透。团簇结构以及这两种结构的共存导致了各种类型的基态和激发态，在这些研究中，我们开发了“具有新发明的团簇结构约束的变分计算新方法”，并将其广泛用于实际分析。我们还对“Hartree-Fock 波函数中包含的簇分量”进行了研究。

项目成果

Inelastic Form Factors to Alpha-Particle Condensate Statesin 12C and 160 : What Can We Learn?

12C 和 160 中 α 粒子凝聚态的非弹性形状因子：我们可以学到什么？

• 发表时间: 2006
• 期刊: European Physical Journal A 28
• 作者: T.Tatsumi;E.Nakano;K.Nawa;Y.Funaki;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki
• 通讯作者: Y.Funaki

Resonance States in 12C and alpha-Particle Condensation

12C 和 α 粒子凝聚的共振态

• 发表时间: 2005
• 期刊: European Physical Journal A 24
• 作者: T.Tatsumi;E.Nakano;K.Nawa;Y.Funaki;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;J.A.Maruhn;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;Y.Funaki
• 通讯作者: Y.Funaki

Explicit Treatment of Tensor Force with the Method of Antisymmetrized Molecular Dynamics

用反对称分子动力学方法显式处理张量力

• 发表时间: 2006
• 期刊: Progress of Theoretical Physics 115
• 作者: T.Tatsumi;E.Nakano;K.Nawa;Y.Funaki;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;J.A.Maruhn;M.Kimura;A.Dote
• 通讯作者: A.Dote

160 + 160 Molecular Nature of the Superdeformed Band of 32S and the Evolution of the Molecular Structure

160 160 32S超变形能带的分子性质及分子结构的演化

• 发表时间: 2004
• 期刊: Physical Review C 69
• 作者: T.Tatsumi;E.Nakano;K.Nawa;Y.Funaki;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;J.A.Maruhn;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;Y.Funaki;Y.Funaki;H.Takemoto;M.Kimura
• 通讯作者: M.Kimura

Clustering Phenomena in Nuclear Matter below Saturation Density

低于饱和密度的核物质的聚集现象

• 发表时间: 2004
• 期刊: Physical Review C 69
• 作者: T.Tatsumi;E.Nakano;K.Nawa;Y.Funaki;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;J.A.Maruhn;M.Kimura;A.Dote;Y.Funaki;J.A.Maruhn;Y.Funaki;Y.Funaki;Y.Funaki;H.Takemoto
• 通讯作者: H.Takemoto