Study of neutron-rich calcium isotopes with a realistic shell-model interaction

TL;DR

This paper uses a realistic shell-model approach to study neutron-rich calcium isotopes, successfully predicting unknown spectra and discussing potential shell closures, with results aligning well with experimental data.

Contribution

It introduces a shell-model study of calcium isotopes using a realistic interaction derived from the CD-Bonn potential, predicting spectra of unmeasured isotopes.

Findings

Good agreement with experimental data for known isotopes

Predictions for spectra of 53-56Ca nuclei

Discussion of possible N=34 shell closure

Abstract

We have studied neutron-rich calcium isotopes in terms of the shell model employing a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential. The short-range repulsion of the potential is renormalized by way of the V-low-k approach. The calculated results are in very good agreement with the available experimental data, thus supporting our predictions for the hitherto unknown spectra of 53-56Ca nuclei. In this context, the possible existence of an N=34 shell closure is discussed.