变形核 154Dy 共振态的伪ospin 对称性

IF 1 4区 物理与天体物理 Q4 PHYSICS, NUCLEAR International Journal of Modern Physics E Pub Date : 2024-03-16 DOI:10.1142/s0218301324500058
Xin-Xing Shi, Zhen-Yu Zheng
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引用次数: 0

摘要

众所周知,伪自旋对称性在许多物理现象的形成中起着至关重要的作用。通过将相对论均场理论与复动量表示方法相结合,研究了变形核 154Dy 中单粒子共振态的伪自旋对称性,包括伪自旋双特的能量和宽度分裂、四极变形参数、径向密度分布和占据概率。在连续阈附近,结合态和共振态都保留了良好的伪ospin 对称性。共振态中假自旋双特的能量和宽度分裂与形变和量子数相关。假轨道角动量投影Λ̃和主量子数N越小,假空对称性越好。通过研究变形核的伪自旋对称性,加深了对共振态中伪自旋双态演变的理解。
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Pseudospin symmetry in resonant states in deformed nucleus 154Dy

It is known that pseudospin symmetry plays a crucial role in formation of many physical phenomena. By combining the relativistic mean field theory with the complex momentum representation method, the pseudospin symmetry in the single particle resonant states in the deformed nucleus 154Dy is investigated through the energy and width splittings, the quadrupole deformation parameter, the radial density distributions and occupation probabilities of the pseudospin doublets. Near the continuum threshold, the pseudospin symmetry is well reserved in both bound and resonant states. The energy and width splittings of pseudospin doublets in resonant states exhibit correlations with the deformation and quantum numbers. The good pseudospin symmetry is expected with lower pseudo-orbital angular momentum projection Λ̃ and the main quantum number N. In general, an increase in deformation tends to weaken the quality of the pseudospin symmetry. The understanding of the evolution of the pseudospin doublets in the resonant states has been deepened by studying the pseudospin symmetry in the deformed nuclei.

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来源期刊
International Journal of Modern Physics E
International Journal of Modern Physics E 物理-物理:核物理
CiteScore
1.90
自引率
18.20%
发文量
98
审稿时长
4-8 weeks
期刊介绍: This journal covers the topics on experimental and theoretical nuclear physics, and its applications and interface with astrophysics and particle physics. The journal publishes research articles as well as review articles on topics of current interest.
期刊最新文献
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