All orders proton breakup from exotic nuclei

TL;DR

This paper introduces a semi-analytical semiclassical method for modeling proton breakup in exotic nuclei, accounting for all orders of Coulomb and nuclear interactions, and explaining asymmetries in momentum distributions.

Contribution

The paper develops a new semi-analytical approach that fully incorporates Coulomb multipole expansion and nuclear interactions for proton breakup, improving understanding of reaction dynamics.

Findings

Method accurately reproduces experimental data

Explains asymmetries in core momentum distributions

Provides detailed insight into short and long-range interaction effects

Abstract

We present a semiclassical method to treat the proton breakup from a weakly bound state in an exotic nucleus. The Coulomb interactions between the proton, core and target are treated to all orders and including the full multipole expansion of the Coulomb potential. The nuclear proton-target interaction is also treated to all orders. The core-target interaction is included as an absorption. The method is semi-analytical thus allowing for a detailed understanding of the short range and long range effects of the interactions in the reaction dynamics. It explains also the origin of possible asymmetries in the core parallel momentum distributions when the full multipole expansion of the Coulomb potential is used. Calculations are compared to results of other, fully numerical, methods and to experimental data in order to establish the accuracy and reliability of the method.