Collective model description of parity-doublet bands in odd mass nuclei

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL Atomic Data and Nuclear Data Tables Pub Date : 2024-09-26 DOI:10.1016/j.adt.2024.101692
R. Budaca
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引用次数: 0

Abstract

The yrast parity doublet rotational bands in odd medium mass and heavy nuclei are described by a quadrupole–octupole axially symmetric collective model within the strong coupling assumption regarding the odd nucleon. Energy levels of the same spin and opposite parity are interpreted as symmetric and antisymmetric quantum states of the quadrupole–octupole shape fluctuation. The energy spectrum and the associated electromagnetic transitions of the parity doublet bands observed in 21 selected nuclei, are reproduced with a very good accuracy. Predictions are performed for energies of unobserved states and electromagnetic properties. The model parameters are used to establish the static or dynamic nature of the octupole correlations in the ground state and their evolution with spin. A general systematization of the octupole effects as a function of nucleon numbers is realized in conjunction with results on even–even nuclei.
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奇质量原子核中奇偶重态带的集体模型描述
在奇核强耦合假设下,用四极-八极轴对称集体模型描述了奇中质和重核的奇宇称偶重旋转带。相同自旋和相反宇称的能级被解释为四极-八极形状涨落的对称和反对称量子态。在21个选定的原子核中观测到的宇称重态带的能谱和相关的电磁跃迁,得到了很好的再现。对未观测态和电磁特性的能量进行了预测。模型参数用于建立基态八极相关的静态或动态性质及其随自旋的演化。结合偶偶核的结果,实现了八极子效应作为核子数函数的一般系统化。
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来源期刊
Atomic Data and Nuclear Data Tables
Atomic Data and Nuclear Data Tables 物理-物理:核物理
CiteScore
4.50
自引率
11.10%
发文量
27
审稿时长
47 days
期刊介绍: Atomic Data and Nuclear Data Tables presents compilations of experimental and theoretical information in atomic physics, nuclear physics, and closely related fields. The journal is devoted to the publication of tables and graphs of general usefulness to researchers in both basic and applied areas. Extensive ... click here for full Aims & Scope Atomic Data and Nuclear Data Tables presents compilations of experimental and theoretical information in atomic physics, nuclear physics, and closely related fields. The journal is devoted to the publication of tables and graphs of general usefulness to researchers in both basic and applied areas. Extensive and comprehensive compilations of experimental and theoretical results are featured.
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