Shell evolution in nuclei investigated with large-scale shell-model calculations

通过大规模壳模型计算研究原子核中的壳演化

• 批准号: 21740204
• 负责人: UTSUNO Yutaka
• 金额: $ 2.33万
• 依托单位: Japan Atomic Energy Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740204/
• 关键词: 核構造; 不安定核; 殻構造; 魔法数; 殻模型; 有効相互作用; 原子核構造; 理論核物理; モンテカルロ殻模型; 原子核構造論

We have made a large contribution to clarifying the mechanism that causes the evolution of shell structure in unstable nuclei, using large-scale nuclear-structure calculations based on the shell model. In particular, we have constructed a framework that describes the structure of unstable nuclei around neutron number, denoted N, 28, and proposed a new picture named “tensor-force driven Jahn-Teller effect” to account for the origin of the disappearance of the N=28 magic number. Furthermore, we have revealed the shell structure of unstable nuclei beyond N=28. We have also greatly advanced the Monte Carlo shell-model method to enable very large-scale shell-model calculations.

我们利用基于壳模型的大规模核结构计算，为阐明导致不稳定核中壳结构演化的机制做出了很大贡献。特别是，我们建立了一个描述中子数附近不稳定核结构的框架，记为N，28，并提出了一个新的图景--“张量力驱动的Jahn-Teller效应”来解释N=28幻数消失的原因。此外，我们还揭示了N=28以上不稳定核的壳层结构。我们还极大地改进了蒙特卡罗壳模型方法，使之能够进行超大规模的壳模型计算。

项目成果

Structure of unstable nuclei around N=28 described by a shell model with the monopole-based universal interaction

基于单极子通用相互作用的壳模型描述 N=28 附近不稳定核的结构

• 发表时间: 2011
• 期刊: AIP Conf.Proc.
• 作者: Yutaka Utsuno;他
• 通讯作者: 他