Investigation of the high-spin rotational properties of the proton emitter $^{113}$Cs using a particle-number conserving method

TL;DR

This paper investigates high-spin rotational bands in the proton emitter $^{113}$Cs using a particle-number conserving cranked shell model, accurately reproducing experimental data and analyzing the backbending mechanism.

Contribution

It applies a particle-number conserving method to study high-spin bands in $^{113}$Cs, providing detailed configuration assignments and insights into backbending phenomena.

Findings

Reproduces experimental moments of inertia and alignments

Supports specific configuration assignments for the bands

Analyzes the backbending mechanism through orbital contributions

Abstract

The recently observed two high-spin rotational bands in the proton emitter $^{113}$Cs are investigated using the cranked shell model with pairing correlations treated by a particle-number conserving method, in which the Pauli blocking effects are taken into account exactly. By using the configuration assignments of band 1 ($\pi 3/2^+[422], \alpha = -1/2$) and band 2 ($\pi 1/2^+[420], \alpha = 1/2$), the experimental moments of inertia and quasiparticle alignments can be well reproduced by the present calculations, which in turn strongly support these configuration assignments. Furthermore, by analyzing the occupation probability $n_\mu$ of each cranked Nilsson level near the Fermi surface and the contribution of each orbital to the angular momentum alignments, the backbending mechanism of these two bands is also investigated.