Properties of charge-exchange giant spin-dipole resonances in medium-heavy closed-shell parent nuclei: a semimicroscopic description

TL;DR

This paper adapts a semimicroscopic particle-hole dispersive optical model to describe charge-exchange giant spin-dipole resonances in medium-heavy closed-shell nuclei, providing insights into their properties and decay mechanisms.

Contribution

It introduces a modified model for accurately predicting properties of charge-exchange giant spin-multipole resonances in specific nuclei.

Findings

Calculated strength functions and transition densities agree with experimental data.

Branching ratios of direct one-nucleon decay are estimated.

Model successfully describes properties of resonances in multiple nuclei.

Abstract

The semimicroscopic particle-hole dispersive optical model is adapted for a description of main properties of charge-exchange giant spin-multipole resonances in medium-heavy closed-shell parent nuclei. The adapted model is implemented to evaluating the strength functions, transition densities, and branching ratios of direct one-nucleon decay for charge-exchange giant spin-dipole resonances in the ^{48}Ca, ^{90}Zr, ^{132}Sn, and ^{208}Pb parent nuclei. Some of calculation results are compared with available experimental data.