g9/2 nuclei and neutron-proton interaction

TL;DR

This paper uses realistic shell-model calculations to study g9/2 nuclei below 100Sn, focusing on 96Cd and 92Pd, and investigates the role of isoscalar spin-aligned coupling with results matching experimental data.

Contribution

It introduces a parameter-free shell-model approach with a realistic interaction to analyze g9/2 nuclei, providing new insights into isoscalar spin-aligned coupling effects.

Findings

Calculated results for 92Pd agree with experimental data

Predictions for 96Cd are consistent with theoretical expectations

Wave function analysis highlights the importance of isoscalar spin-aligned coupling

Abstract

We have performed shell-model calculations for nuclei below 100Sn, focusing attention on the two N=Z nuclei 96Cd and 92Pd, the latter having been recently the subject of great experimental and theoretical interest. We have considered nuclei for which the 0g9/2 orbit plays a dominant role and employed a realistic low-momentum two-body effective interaction derived from the CD-Bonn nucleon-nucleon potential. This implies that no phenomenological input enters our effective Hamiltonian. The calculated results for 92Pd are in very good agreement with the available experimental data, which gives confidence in our predictions for 96Cd. An analysis of the wave functions of both 96Cd and 92Pd is performed to investigate the role of the isoscalar spin-aligned coupling.