Developing Nucleon Self-Energies to Generate the Ingredients for the Description of Nuclear Reactions

This thesis develops the dispersive optical model into a tool that allows for the assessment of the validity of nuclear reaction models, thereby generating unambiguous removal probabilities of nucleons from valence orbits using the electron-induced proton knockout reaction. These removal probabilities document the substantial quantitative degree in which nuclei deviate from the independent-particle model description. Another outcome reported within is the prediction for the neutron distribution of Ca-40, Ca-48, and Pb-208. The neutron radii of these nuclei have direct relevance for the understanding of neutron stars and are currently the subject of delicate experiments. Unlike other approaches, the current method is consistent with all other relevant data and describes nuclei beyond the independent-particle model. Finally, a new interpretation of the saturation probabilities of infinite nuclear matter is proposed suggesting that the semi-empirical mass formula must be supplemented witha better extrapolation from nuclei to infinite matter.

Nominated as an outstanding PhD thesis by Washington University in St. Louis Provides an accessible overview of the dispersive optical model and an appendix on scattering theory Reports significant progress on nuclear reaction models which have applications to neutron stars

Auteur

Mack Atkinson is a postdoctoral researcher at TRIUMF, Canada. He received his PhD from Washington University in St. Louis in 2019.

Contenu
Chapter1: Introductory Remarks.- Chapter2: Theoretical Background.- Chapter3: A DOM Analysis of 40Ca(e; e0p)39K.- Chapter4: Neutron Skin Thickness of Asymmetric Nuclei.- Chapter5: DOM Binding Energies and Nuclear Matter.- Chapter6: Momentum Distributions.- Chapter7: Conclusions and Outlook.