Nuclear Spectroscopy with Heavy Ion Nucleon Knockout and (p,2p) Reactions

TL;DR

This paper demonstrates how ab-initio no-core shell model calculations can improve the interpretation of heavy ion knockout and (p,2p) reactions for nuclear spectroscopy, providing more accurate spectroscopic factors.

Contribution

It introduces the use of ab-initio no-core shell model wavefunctions to analyze nucleon removal reactions, enhancing the understanding of experimental spectroscopy data.

Findings

Ab-initio calculations clarify the dependence of spectroscopic factors on many-body wavefunctions.

Recent advances in ab-initio methods improve insights from knockout and (p,2p) reaction experiments.

The study applies to light nuclei like beryllium, carbon, and oxygen isotopes.

Abstract

Knockout reactions with heavy ion targets in inverse kinematics, as well as "quasi-free" (p,2p) and (p,pn) reactions are useful tools for nuclear spectroscopy. We report calculations on \textit{ab-initio} many-body wavefunctions based on the no-core shell model to study the nucleon removal reactions in light nuclei, including beryllium, carbon, and oxygen isotopic chains, and explore the importance of using an \textit{ab-initio} method. Our study helps clarifying how the extraction of spectroscopic factors from the experiments depend on the details of the many-body wavefunctions being probed. We show that recent advances with the ab-initio method can provide more insights on the spectroscopy information extracted from experiments.