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Electromagnetic processes in few-body systems

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dc.contributor.advisor Sofianos, S. A.
dc.contributor.advisor Braun, M. Rampho, Gaotsiwe Joel 2011-10-04T08:42:49Z 2011-10-04T08:42:49Z 2010-11
dc.identifier.citation Rampho, Gaotsiwe Joel (2010) Electromagnetic processes in few-body systems, University of South Africa, Pretoria, <> en
dc.description.abstract Electromagnetic processes induced by electron scattering off few-nucleon systems are theoretically investigated in the non-relativistic formalism. Non-relativistic one-body nuclear current operators are used with a parametrization of nucleon electromagnetic form factors based on recent experimental nucleon scattering data. Electromagnetic form factors of three-nucleon and four-nucleon systems are calculated from elastic electron-nucleus scattering information. Nuclear response functions used in the determination of differential cross sections for inclusive and exclusive quasi-elastic electron-nucleon scattering from the 4He nucleus are also calculated. Final-state interactions in the quasi-elastic nucleon knockout process are explicitly taken into account using the Glauber approximation. The sensitivity of the response functions to the final-state interactions is investigated. The Antisymmetrized Molecular Dynamics approach with angular momentum and parity projection is employed to construct ground state wave functions for the nuclei. A reduced form of the realistic Argonne V18 nucleon-nucleon potential is used to describe nuclear Hamiltonian. A convenient numerical technique of approximating expectation values of nuclear Hamiltonian operators is employed. The constructed wave functions are used to calculate ground-state energies, root-mean-square radii and magnetic dipole moments of selected light nuclei. The theoretical predictions of the nuclear properties for the selected nuclei give a satisfactory description of experimental values. The Glauber approximation is combined with the Antisymmetrized Molecular Dynamics to generate wave functions for scattering states in quasi-elastic scattering processes. The wave functions are then used to study proton knockout reactions in the 4He nucleus. The theoretical predictions of the model reproduce experimental observation quite well. en
dc.format.extent 1 online resource (iv, 135 leaves)
dc.language.iso en en
dc.subject Antisymmetrized molecular dynamics en
dc.subject Angular momentum projection en
dc.subject Glauber approximation en
dc.subject Current operators en
dc.subject Few-body systems en
dc.subject Electron-Nucleus scattering en
dc.subject Electromagnetic transitions en
dc.subject Differential cross section en
dc.subject.ddc 530.141
dc.subject.lcsh Electromagnetic theory
dc.subject.lcsh Few-body problem
dc.subject.lcsh Nuclear physics
dc.subject.lcsh Scattering (Physics)
dc.title Electromagnetic processes in few-body systems en
dc.type Thesis en
dc.description.department Physics Ph D. (Physics)

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