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Full-Text Articles in Physics
Developing Nucleon Self-Energies To Generate The Ingredients For The Description Of Nuclear Reactions, Mack Charles Atkinson
Developing Nucleon Self-Energies To Generate The Ingredients For The Description Of Nuclear Reactions, Mack Charles Atkinson
Arts & Sciences Electronic Theses and Dissertations
The nucleon self-energies of 40Ca, 48Ca, and 208Pb are determined using a
nonlocal dispersive optical model (DOM). By enforcing the dispersion relation
connecting the real and imaginary part of the self-energy, both experimental
scattering data and nuclear structure data are used to constrain these
self-energies. The ability to calculate both bound and scattering states
simultaneously puts these self-energies in a unique position to consistently
describe exclusive knockout reactions such as (e,e'p). Using the
well-constrained self-energy describing 40Ca, the distorted-wave impulse
approximation (DWIA) description of the (e,e'p) reaction is shown to be valid
for outgoing proton kinetic energies around 100 MeV. …
A Nonlocal Application Of The Dispersive Optical Model To 208pb, Michael Keim
A Nonlocal Application Of The Dispersive Optical Model To 208pb, Michael Keim
Undergraduate Research Symposium Posters
A nonlocal application of the dispersive optical model to neutrons and protons in 208Pb is presented. A nucleon self-energy is described by parametrized real and imaginary parts connected through a dispersion relation. This parametrization includes nonlocal Hartree-Fock and spin-orbit and local Coulomb real terms, and nonlocal volume and surface and local spin-orbit imaginary terms. A simple Gaussian nonlocality is employed, and appropriate asymmetry parameters are included to describe the N-Z dependence of the nucleus. These parameters are constrained by fitting to experimental data, including particle numbers, energy levels, the charge density, elastic-scattering angular distributions, reaction cross sections, and the …
Application Of The Dispersive Optical Model To 208pb, Michael Keim
Application Of The Dispersive Optical Model To 208pb, Michael Keim
Undergraduate Research Symposium Posters
A review of developments for the application of the dispersive optical model (DOM) to 208Pb is presented. By providing appropriate parameters describing real and imaginary parts of a nonlocal self-energy, connected through a dispersion relation, reasonable reproductions of both scattering and bound-state properties are generated. By fitting these parameters to experimental data, a more accurate description of the neutron skin may be achieved, which would have implications for the physics of neutron stars.