Microscopic investigation of magnetic and antimagnetic rotational motion in atomic nuclei

TL;DR

This paper extends the projected shell model to include multi-shell quasiparticle excitations and applies it to study magnetic and antimagnetic rotational bands in odd-neutron Pd- and Cd-isotopes, achieving reasonable agreement with observations.

Contribution

The authors develop a generalized PSM including two major shells and five-quasiparticle configurations, enabling detailed analysis of rotational structures in odd-mass nuclei.

Findings

PSM accurately describes magnetic rotational bands.

PSM captures antimagnetic rotational properties.

Extended model improves understanding of nuclear rotational phenomena.

Abstract

In the present work, we have generalized the projected shell model (PSM) approach to include the quasiparticle excitations from two major oscillator shells, and have also extended the basis space to five-quasiparticle configurations for odd-mass nuclei. The magnetic and antimagnetic rotational structures observed in odd-neutron Pd- and Cd-isotopes have been investigated as a first major application of the new development. It is shown that PSM approach provides a reasonable description of the observed properties of magnetic and antimagnetic rotational bands.