Systematics of intermediate-energy single-nucleon removal cross sections

TL;DR

This paper reviews and compares experimental data and theoretical models for single-nucleon removal reactions at intermediate energies, highlighting the current understanding and challenges in accurately predicting cross sections across various nuclei.

Contribution

It provides a comprehensive analysis of existing experimental data and theoretical approaches, including shell-model and microscopic inputs, to improve understanding of single-nucleon removal processes.

Findings

Good agreement in some regions of the nuclear chart

Discrepancies highlight the need for refined models

Recent data challenge existing theoretical approximations

Abstract

There is now a large and increasing body of experimental data and theoretical analyses for reactions that remove a single nucleon from an intermediate-energy beam of neutron- or proton-rich nuclei. In each such measurement, one obtains the inclusive cross section for the population of all bound final states of the mass A-1 reaction residue. These data, from different regions of the nuclear chart, and that involve weakly- and strongly-bound nucleons, are compared with theoretical expectations. These calculations include an approximate treatment of the reaction dynamics and shell-model descriptions of the projectile initial state, the bound final states of the residues, and the single-particle strengths computed from their overlap functions. The results are discussed in the light of recent data, more exclusive tests of the eikonal dynamical description, and calculations that take input from more microscopic nuclear structure models.