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Ab Initio Nuclear Structure Calculations for Light Nuclei
Author(s) -
Robert Chase Cockrell
Publication year - 2012
Language(s) - English
Resource type - Dissertations/theses
DOI - 10.31274/etd-180810-3131
Subject(s) - ab initio , nuclear structure , physics , atomic physics , nuclear physics , materials science , molecular physics , quantum mechanics
We perform no-core full configuration calculations for the Lithium isotopes, 6Li, 7Li, and 8Li with the realistic nucleon-nucleon interaction JISP16. We obtain a set of observables, such as spectra, radii, multipole moments, transition probabilities, etc., and compare with experiment where available. We obtain underbinding by 0.5 MeV, 0.7 MeV, and 1.0 MeV for 6Li, 7Li, 8Li respectively. Magnetic moments are well-converged and agree with experiment to within 20%. We then introduce the One-Body Density Matrix. We present a method to remove the spurious center-of-mass component from the space-fixed density distribution. We present spacefixed and translationally-invariant density distributions for various states of 6Li, 7Li, and 8Li. We also examine select translationally-invariant density distributions from the ground state and several excited states of 9Be. The resulting translationally-invariant densities can be used to examine convergence issues and better represent features of the nuclear shape. Convergence properties of these density distributions shed light on the convergence properties of experimental one-body observables. We then present a method to calculate the space-fixed and translationally-invariant Wigner Function using our One-Body Density Matrices. We present a novel visualization of these Wigner Functions.

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