Alpha and cluster radioactivity of heavy and superheavy nuclei /
Abdulnaby Abdurrahman Mohamed Hosine
Alpha and cluster radioactivity of heavy and superheavy nuclei / النشاط الاشعاعى من النوعين ألفا و العنقودى للأنوية الثقيلة و الأنوية فائقة الثقل Abdulnaby Abdurrahman Mohamed Hosine ; Supervised M. Y. Ismail , Walaa M. Seif , Ali Y. Ellithy - Cairo : Abdulnaby Abdurrahman Mohamed Hosine , 2016 - 115 P. : facsimiles ; 25cm
Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics
A universal curve is one of the simple ways to get preliminary information about the Ü-decay half-life times of heavy nuclei. We try to find parameterization for the universal curve of Ü decay based on semi-microscopic calculations, starting from the realistic M3Y-Reid nucleon-nucleon interaction. Within the deformed density- dependent cluster model, the penetration probability and the assault frequency are calculated using the Wentzel-Kramers-Brillouin (WKB) approximation. The deformations of daughter nuclei and the ground-state spin and parity of the involved nuclei are considered. For all studied decays, we found that it is accurate enough to express the assault frequency either as a function of the mass number of the parent nuclei or as a constant average value. The average preformation probability of the Ü cluster inside four groups of 166 even (Z)-even (N), 117 odd-even, 140 even-odd, and 73 odd-odd Ü-emitters are obtained, individually. We suggested a single universal curve for Ü decay with only one parameter. This parameter varies according to the classified four groups. Finally, we suggested a simpler universal curve based on the simple phenomenological form of penetrability but fitted to the microscopically calculations
Alpha Cluster Radioactivity Heavy and Superheavy Nuclei
Alpha and cluster radioactivity of heavy and superheavy nuclei / النشاط الاشعاعى من النوعين ألفا و العنقودى للأنوية الثقيلة و الأنوية فائقة الثقل Abdulnaby Abdurrahman Mohamed Hosine ; Supervised M. Y. Ismail , Walaa M. Seif , Ali Y. Ellithy - Cairo : Abdulnaby Abdurrahman Mohamed Hosine , 2016 - 115 P. : facsimiles ; 25cm
Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics
A universal curve is one of the simple ways to get preliminary information about the Ü-decay half-life times of heavy nuclei. We try to find parameterization for the universal curve of Ü decay based on semi-microscopic calculations, starting from the realistic M3Y-Reid nucleon-nucleon interaction. Within the deformed density- dependent cluster model, the penetration probability and the assault frequency are calculated using the Wentzel-Kramers-Brillouin (WKB) approximation. The deformations of daughter nuclei and the ground-state spin and parity of the involved nuclei are considered. For all studied decays, we found that it is accurate enough to express the assault frequency either as a function of the mass number of the parent nuclei or as a constant average value. The average preformation probability of the Ü cluster inside four groups of 166 even (Z)-even (N), 117 odd-even, 140 even-odd, and 73 odd-odd Ü-emitters are obtained, individually. We suggested a single universal curve for Ü decay with only one parameter. This parameter varies according to the classified four groups. Finally, we suggested a simpler universal curve based on the simple phenomenological form of penetrability but fitted to the microscopically calculations
Alpha Cluster Radioactivity Heavy and Superheavy Nuclei