Effects of the triaxial deformation and pairing correlation on the proton emitter 145Tm

TL;DR

This study investigates how triaxial deformation and pairing correlations influence the ground-state properties of the proton emitter 145Tm, using relativistic mean field models to match experimental data.

Contribution

It introduces a detailed analysis of triaxial deformation and pairing effects on 145Tm within the relativistic mean field framework, improving understanding of proton emission.

Findings

Triaxiality and pairing are crucial for reproducing the proton separation energy.

The deformation parameters for 145Tm are beta=0.22 and gamma=28.98.

The study provides single-particle levels and spectroscopic factors for 145Tm.

Abstract

The ground-state properties of the recent reported proton emitter 145Tm have been studied within the axially or triaxially deformed relativistic mean field (RMF) approaches, in which the pairing correlation is taken into account by the BCS-method with a constant pairing gap. It is found that triaxiality and pairing correlations play important roles in reproducing the experimental one proton separation energy. The single-particle level, the proton emission orbit, the deformation parameters beta = 0.22 and gamma = 28.98 and the corresponding spectroscopic factor for 145Tm in the triaxial RMF calculation are given as well.