$ \boldsymbol{\gamma} $-vibration in $^{198}$Hg

TL;DR

This study investigates gamma-vibrational states in the nucleus $^{198}$Hg through experimental reactions and compares the results with theoretical predictions, confirming the presence of gamma-vibrational bands and validating the microscopic triaxial projected shell model.

Contribution

First experimental identification of gamma-vibrational bands in $^{198}$Hg and validation of TPSM predictions for this nucleus.

Findings

Gamma-vibrational band members identified in $^{198}$Hg.

Experimental results agree with systematic trends in this mass region.

TPSM calculations are in fair agreement with observed energies.

Abstract

Low lying states of $^{198}$Hg have been investigated via $^{197}$Au($^{7}$Li, $ \alpha $2n$ \gamma $)$ ^{198} $Hg reaction at E$ _{\text{beam}} $ = 33 MeV and 38 MeV and the members of $ \gamma $-vibrational band have been identified. Results are compared with the systematic of this mass region and found in agreement. Observed band structures have been interpreted using the theoretical framework of microscopic triaxial projected shell model (TPSM) approach and it is shown that TPSM results are in fair agreement with the observed energies.