Unified description of rotational-, $\gamma$-, and quasiparticle-band structures in neutron-rich mass $\sim$ 110 region

TL;DR

This paper uses the triaxial projected shell model to analyze and describe the complex band structures, including gamma and quasiparticle bands, in neutron-rich Mo- and Ru-isotopes around mass 110, providing a unified theoretical framework.

Contribution

The study applies the TPSM approach with multi-quasiparticle configurations to comprehensively describe band structures in neutron-rich A~110 nuclei, unifying various observed features.

Findings

TPSM accurately reproduces observed band structures.

Detailed variations in Mo isotopes are well explained.

Rich variety of gamma and quasiparticle bands is characterized.

Abstract

Band structures of the neutron-rich Mo- and Ru-isotopes around A $\sim $ 110 are investigated using the triaxial projected shell model (TPSM) approach employing multi-quasiparticle configuration space. The mass region under investigation depicts a rich variety of band structures with well developed $\gamma$- and $\gamma\gamma$-bands, and quasiparticle excitations based on them. It is demonstrated that TPSM provides a reasonable description of most of the observed properties, in particular, detailed structure variations observed in Mo-isotopes are well reproduced in the present work.