Re examination of \b{eta} decay in Hg, Pb and Po Isotopes

TL;DR

This paper investigates how nuclear deformation influences Gamow Teller strength distributions, half-lives, and branching ratios in neutron-deficient Hg, Pb, and Po isotopes using relativistic mean field and deformed QRPA models.

Contribution

It re-examines the impact of nuclear shape parameters on GT strength and decay properties using a combined relativistic mean field and QRPA approach with multiple interactions.

Findings

Half lives vary significantly with nuclear shape.

GT strength distributions are sensitive to deformation.

Shape parameters influence decay characteristics.

Abstract

This study re examines the effect of nuclear deformation on the calculated Gamow Teller (GT) strength distributions of neutron deficient (178 192Hg, 185 194Pb and 196 206Po) nuclei. The nuclear ground state properties and shape parameters were calculated using the Relativistic Mean Field model. Three different density dependent interactions were used in the calculation. Estimated shape parameters were later used within the framework of deformed proton-neutron quasi random phase approximations model, with a separable interaction, to calculate the GT strength distributions, half lives and branching ratios for these neutron deficient isotopes. It was concluded that half lives and GT strength distributions vary considerably with change in shape parameter.