Bulk and decay properties of neutron-deficient odd-mass Hg isotopes around A = 185

TL;DR

This paper presents a comprehensive microscopic study of neutron-deficient odd-mass Hg isotopes around A=185, analyzing their shapes, charge radii, magnetic moments, and beta decay properties using advanced nuclear models.

Contribution

It introduces a detailed theoretical framework combining Hartree-Fock, BCS, and QRPA methods to predict properties of specific Hg isotopes, aiding future experimental investigations.

Findings

Calculated charge radii and magnetic moments show sensitivity to nuclear deformation.

Predicted Gamow-Teller strength distributions and beta decay half-lives.

Results provide benchmarks for upcoming experimental measurements at ISOLDE-CERN.

Abstract

Ground and isomeric states of the neutron-deficient odd-$A$ isotopes $^{183}$Hg, $^{185}$Hg, and $^{187}$Hg are described from a microscopic calculation based on a self-consistent, axially-deformed Hartree-Fock mean field with the Skyrme functional and pairing within BCS approximation. For each equilibrium shape and different odd-neutron states, results on mean square charge radii and magnetic dipole moments are given and analyzed in the context of their sensitivity to the nuclear deformation and to the spin and parity. Spin-isospin correlations within proton-neutron quasiparticle random phase approximation are then introduced in the nuclear states to obtain the distributions of Gamow-Teller strength and the $\beta^+/EC$ half-lives of these isotopes, whose measurements are planned at ISOLDE-CERN using total absorption gamma-ray spectroscopy techniques.