Triaxial projected shell model study of chiral rotation in odd-odd nuclei

TL;DR

This paper uses a microscopic triaxial projected shell model to successfully reproduce energy levels and transition probabilities in chiral rotation of odd-odd nucleus $^{128}$Cs, demonstrating the model's broad applicability.

Contribution

The study introduces and applies the TPSM approach to describe chiral rotation in $^{128}$Cs, showing its effectiveness in explaining low- and high-spin phenomena.

Findings

Energy levels and transition probabilities match experimental data

Demonstrates TPSM's applicability to triaxial rotating nuclei

Successfully reproduces nearly degenerate chiral dipole bands

Abstract

Chiral rotation observed in $^{128}$Cs is studied using the newly developed microscopic triaxial projected shell model (TPSM) approach. The observed energy levels and the electromagnetic transition probabilities of the nearly degenerate chiral dipole bands in this isotope are well reproduced by the present model. This demonstrates the broad applicability of the TPSM approach, based on a schematic interaction and angular-momentum projection technique, to explain a variety of low- and high-spin phenomena in triaxial rotating nuclei.