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arXiv 2603.21985nucl-th
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对$^{87, 89, 91}$Br的系统性旋转壳模型计算

Systematic Cranked Shell Model Calculations for $^{87, 89, 91}$Br

Indian Institute of Technology Roorkee(印度理工学院鲁尔基分校)

Nabeel Salim, Mehak Narula, P. Arumugam

AI总结:

研究利用约束旋转壳模型框架系统分析了中子富集的溴同位素,揭示了旋转惯量和角动量对齐的实验趋势,发现$^{87}$Br的γ软性、$^{89-93}$Br的形状共存及接近N=56的椭球体转变。

摘要:

对奇数质量中子富集的溴同位素$^{87-91}$Br进行了系统研究,基于配置约束旋转壳模型框架。计算的动能转动惯量和角动量对齐与实验趋势有良好一致,支持所分配的带结构。总罗uthian表面计算揭示了$^{87}$Br的明显γ软性,$^{89-93}$Br的形状共存以及接近N=56的椭球体转变。这些结果表明,CSM在该质量区域提供了可靠的旋转行为和形状演变描述,实现了更高的准确性,同时提供了清晰的准粒子配置和形状驱动效应解释。

英文摘要:

A systematic investigation of the odd-mass neutron-rich bromine isotopes $^{87-91}$Br has been carried out within the configuration-constrained cranked shell model (CSM) framework. The calculated kinematic moments of inertia and angular-momentum alignments reproduce the experimental trends with excellent agreement for the proposed quasiparticle configurations, thereby supporting the assigned band structures. The total Routhian surface calculations reveal pronounced $γ$-softness in $^{87}$Br, shape coexistence in $^{89-93}$Br, and a gradual prolate-to-oblate transition approaching $N=56$. These results demonstrate that the CSM provides a reliable description of rotational behavior and shape evolution in this mass region, achieving a better level of accuracy, while offering a transparent interpretation of quasiparticle configurations and shape-driving effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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