Magnetic rotations in 198Pb and 199Pb within covariant density functional theory with pairing correlations

TL;DR

This paper investigates magnetic rotation bands in 198Pb and 199Pb using covariant density functional theory with pairing, successfully reproducing experimental spectra and analyzing pairing effects on angular momentum vectors.

Contribution

It introduces a covariant density functional approach with pairing correlations to accurately model magnetic rotations in lead isotopes.

Findings

Energy spectra and transition probabilities match experimental data

Bandhead energy differences are well reproduced without renormalization

Pairing correlations significantly influence angular momentum vectors

Abstract

The observed shears bands in 198Pb and 199Pb are investigated within the framework of tilted axis cranking covariant density functional theory, and the separable pairing force is adopted to consider the pairing correlations. The energy spectra, total angular momenta, and transition probabilities agree well with the experimental data. The bandhead energy differences are reproduced satisfactorily without any ad hoc renormalizations when the pairing correlations are taken into account. The angular momentum vectors are discussed in detail to analyze the pairing effects on magnetic rotations.