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dc.creatorNica, Emilian
dc.date.accessioned2011-08-04T14:41:18Z
dc.date.available2011-08-04T14:41:18Z
dc.date.issued2011-08-04
dc.identifier.urihttp://hdl.handle.net/1969.1/98375
dc.description.abstractCalculations of the nuclear response function for the Isovector Giant Dipole Resonance (IVGDR) have been carried out in the past using the discretized Hartree-Fock Random Phase Approximation (HF-DRPA). In many cases they contained violations of self-consistency and a large smearing parameter. To avoid any sources of error we carried out a self-consistent HF-Continuum RPA (HF-CRPA) to determine the IVGDR response function in 60Ca, 28O and 80Zr. We have also examined the free p-h response in the continuum. In addition, we determined resonance energies through the phase shift method for 60Ca and 28O. The main goal of our research was to establish if the low-lying peaks in the response function were due to resonance or particle threshold effects. We have shown that in some cases the enhancements in the response function at low energies are due to threshold effects. We emphasize that in a discretized HF-RPA these peaks are spurious and are due to the discretization of the single-particle continuum.en
dc.description.sponsorshipUndergraduate Research Scholars Programen
dc.format.mediumelectronicen
dc.language.isoen_US
dc.subjectNuclear Collective Excitations, Giant Resonance, Hartree-Fock Random Phase Approximation, Phase Shiften
dc.titleThe Nature of the Low Energy Isovector Dipole Excitations in Nucleien
dc.typeThesisen
dc.type.genreThesisen
dc.type.materialtexten
dc.format.digitalOriginborn digitalen


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