Chirality in odd-$A$ Rh isotopes within triaxial particle rotor model

TL;DR

This paper uses a fully quantal triaxial particle rotor model to study chiral doublet bands in odd-A Rh isotopes, revealing detailed evolution of chirality with angular momentum and the impact of triaxial deformation.

Contribution

It provides a comprehensive analysis of chiral geometry evolution in $^{103}$Rh and $^{105}$Rh using the triaxial particle rotor model, including the effects of triaxial deformation.

Findings

Excellent agreement with observed energies and $B(M1)/B(E2)$ ratios.

Chirality transitions from vibration to static and back with increasing spin.

Triaxial deformation $b3$ significantly influences chiral behavior.

Abstract

Adopting the fully quantal triaxial particle rotor model, the candidate chiral doublet bands in odd-$A$ nuclei $^{103}$Rh and $^{105}$Rh with $\pi g_{9/2}^{-1}\otimes\nu h^{2}_{11/2}$ configuration are studied. For the doublet bands in both nuclei, agreement is excellent for the observed energies over entire spin range and $B(M1)/B(E2)$ at higher spin range. The evolution of the chiral geometry with angular momentum is discussed in detail by the angular momentum components and their probability distributions. Chirality is found to change from chiral vibration to nearly static chirality at spin $I=37/2$ and back to another type of chiral vibration at higher spin. The influence of the triaxial deformation $\gamma$ is also studied.