Comparison of shell model results for even-even Se isotopes

TL;DR

This paper compares shell model calculations for even-even Se isotopes using different interactions, highlighting the effectiveness of the jj44b interaction in reproducing experimental data.

Contribution

It provides a comparative analysis of shell model results with recent interactions, emphasizing the role of proton excitations across Z=28 shell.

Findings

jj44b interaction results agree well with experimental data

Proton excitations across Z=28 are significant in this region

Shell model calculations with different interactions show varying accuracy

Abstract

Comprehensive set of shell model calculations for $^{78-84}$Se isotopes have been performed with recently derived interactions, namely JUN45 and jj44b for ${f_{5/2}pg_{9/2}}$ space. To study the importance of the proton excitations across Z=28 shell in this region mentioned by Cheal {\it et al.} [Phys. Rev. Lett. {\bf104}, 252502 (2010)], calculation for ${fpg_{9/2}}$ valence space using an ${fpg}$ effective interaction with $^{48}$Ca as core and imposing a truncation has also been performed. Comparison of the calculations with experimental data show that the predicted results of jj44b interaction are in good agreement with experimental data.