New Collective structures in the Z=76 stable odd neutron nucleus, 187Os

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dc.contributor.advisorLawrie, E A
dc.contributor.authorSithole, Makuhane Abel
dc.date.accessioned2022-02-23T07:49:29Z
dc.date.accessioned2024-05-14T13:26:39Z
dc.date.available2022-02-23T07:49:29Z
dc.date.available2024-05-14T13:26:39Z
dc.date.issued2021
dc.descriptionPhilosophiae Doctor - PhDen_US
dc.description.abstractLow- and medium-spin bands of 187Os have been studied using the AFRODITE array, following the 186W(4He,3n)187Os reaction at a beam energy of 37 MeV. The measurements of γ − γ coincidences, angular distribution ratios (RAD), polarization and γ-intensities were performed using eleven High Purity Germanium (HPGe) clover detectors. In the current work, all the previously known bands have been significantly extended and five new bands have been added to the level scheme. The observed bands are interpreted within the cranked shell model (CSM), cranked Nilsson-StrutinskyBogoliubov (CNSB) formalism and Quasiparticle-plus-Triaxial-Rotor (QTR) model. Systematic comparison of bands with the neighbouring isotopes has also been made. Comparison of the models with experimental data shows good agreement. The configurations of some of the previously observed bands have been modified. Most importantly, the coupling of 2+ γ band to the 11/2+[615] neutron configuration is observed for the first time.en_US
dc.identifier.urihttps://hdl.handle.net/10566/15015
dc.language.isoenen_US
dc.publisherUniversity of the Western Capeen_US
dc.rights.holderUniversity of the Western Capeen_US
dc.subjectAFRODITEen_US
dc.subjectFusion evaporationen_US
dc.subjectGamma-ray spectroscopyen_US
dc.subjectGamma bandsen_US
dc.subjectAngular distribution ratiosen_US
dc.subjectLinear polarization anisotropyen_US
dc.titleNew Collective structures in the Z=76 stable odd neutron nucleus, 187Osen_US

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Philosophiae Doctor - PhD (Physics)