The reduced-width amplitude in nuclear cluster physics

TL;DR

This paper reviews the theoretical framework and recent advances in calculating the reduced-width amplitude, a key quantity for analyzing nuclear clustering, including applications to cross-section estimation and three-body clustering.

Contribution

It provides a comprehensive overview of the methods and recent progress in calculating and applying the reduced-width amplitude in nuclear cluster physics.

Findings

Enhanced understanding of cluster overlap amplitudes

Implementation for cross-section estimation

Extension to three-body clustering analysis

Abstract

The reduced-width amplitude, as a cluster overlap amplitude, is one important physical quantity for analyzing clustering in the nucleus depending on specified channels and has been calculated and applied widely in nuclear cluster physics. In this review, we briefly revisit the theoretical framework for calculating the reduced-width amplitude, as well as the outlines of cluster models to obtain the microscopic or semi-microscopic cluster wave functions. Besides, we also introduce recent progress related to the cluster overlap amplitudes, such as implementation for cross-section estimation and extension to three-body clustering analysis. Comprehensive examples are provided to show the applications of the reduced-width amplitude in analyzing cluster structures.