Systematic Cranked Shell Model Calculations for $^{87, 89, 91}$Br
Abstract
A systematic investigation of the odd-mass neutron-rich bromine isotopes 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 -softness in Br, shape coexistence in Br, and a gradual prolate-to-oblate transition approaching . 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.
Cite
@article{arxiv.2603.21985,
title = {Systematic Cranked Shell Model Calculations for $^{87, 89, 91}$Br},
author = {Nabeel Salim and Mehak Narula and P. Arumugam},
journal= {arXiv preprint arXiv:2603.21985},
year = {2026}
}
Comments
12 pages, 6 figures