000			02542cam a2200325 a 4500
003			EG-GiCUC
008			170325s2016 ua h f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.20.Ph.D.2016.Ab.A
100	0		_aAbdulnaby Abdurrahman Mohamed Hosine
245	1	0	_aAlpha and cluster radioactivity of heavy and superheavy nuclei / _cAbdulnaby Abdurrahman Mohamed Hosine ; Supervised M. Y. Ismail , Walaa M. Seif , Ali Y. Ellithy
246	1	5	_aالنشاط الاشعاعى من النوعين ألفا و العنقودى للأنوية الثقيلة و الأنوية فائقة الثقل
260			_aCairo : _bAbdulnaby Abdurrahman Mohamed Hosine , _c2016
300			_a115 P. : _bfacsimiles ; _c25cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics
520			_aA 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
530			_aIssued also as CD
653		4	_aAlpha
653		4	_aCluster Radioactivity
653		4	_aHeavy and Superheavy Nuclei
700	0		_aAli Yahia Ellithy , _eSupervisor
700	0		_aMahmoud Yahia Ismail , _eSupervisor
700	0		_aWalaa Mohamed Seif , _eSupervisor
905			_aNazla _eRevisor
905			_aShaima _eCataloger
942			_2ddc _cTH
999			_c60410 _d60410