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Full-Text Articles in Physical Sciences and Mathematics
Isotopically-Resolved Neutron Cross Sections As Probe Of The Nuclear Optical Potential, Cole Davis Pruitt
Isotopically-Resolved Neutron Cross Sections As Probe Of The Nuclear Optical Potential, Cole Davis Pruitt
Arts & Sciences Electronic Theses and Dissertations
Neutron scattering experiments provide direct access to the forces experienced by nucleons in the nuclear environment. Due to the experimental difficulty of cross section measurements with neutrons, isotopically-resolved neutron scattering cross sections are sorely needed as inputs for many nuclear models. This dissertation presents the results from a campaign of isotope-specific neutron total cross section measurements on 16,18O, 58,64Ni, 112,124Sn, and 103Rh from 3-450 MeV and elastic scattering differential cross section measurements on 112,nat,124Sn at 11 and 17 MeV. Equipped with these new data and with computational improvements to the Dispersive Optical Model (DOM), we present DOM treatments of 16,18O, …
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. …