Behavior of odd-even mass staggering around 132Sn

TL;DR

This study uses shell-model calculations with realistic interactions to analyze the odd-even mass staggering around $^{132}$Sn, successfully explaining experimental trends in nuclear binding energies.

Contribution

It demonstrates that shell-model calculations with realistic interactions can accurately reproduce the odd-even mass staggering behavior near $^{132}$Sn.

Findings

Shell-model calculations match experimental staggering trends.

Realistic low-momentum interactions effectively describe nuclear properties.

The behavior across N=82 is explained by the model.

Abstract

We have performed shell-model calculations of binding energies of nuclei around $^{132}$Sn. The main aim of our study has been to find out if the behavior of odd-even staggering across N=82 is explainable in terms of the shell model. In our calculations, we have employed realistic low-momentum two-body effective interactions derived from the CD-Bonn nucleon-nucleon potential that have already proved quite successful in describing the spectroscopic properties of nuclei in the $^{132}$Sn region. Comparison shows that our results fully explains the trend of the experimental staggering.