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العنوان
Effect of nuclear density distribution on alpha decay /
الناشر
Walaa Mahmoud Tawfeek Abdalaa ,
المؤلف
Walaa Mahmoud Tawfeek Abdalaa
هيئة الاعداد
باحث / Walaa Mahmoud Tawfeek Abdalaa
مشرف / Mahmoud Yahia Ismail
مشرف / Walaa Mohamed Seif
مشرف / Manal Makram Saad
تاريخ النشر
2021
عدد الصفحات
124 P . :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
الفيزياء والفلك (المتنوعة)
تاريخ الإجازة
6/5/2020
مكان الإجازة
جامعة القاهرة - كلية العلوم - Physics
الفهرس
Only 14 pages are availabe for public view

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from 149

Abstract

We systematically investigate the influence of changing the parameters of density distribution of the daughter nucleus on the Ü-decay half-lives, TÜ, and predicted magic numbers of even (Z)-even (N) nuclei with atomic numbers 78 {u2264}Zp{u2264} 124.Also we investigated the effects of choosing the Ü-decay energy (QÜ) on predicting unknown magic numbers, or confirming some of them for superheavy nuclei Z = 118{u2013}124. The QÜ values were calculated using three models, namely the finite-range droplet model (FRDM), the Weizsäcker{u2013} Skyrme (WS4) mass model, and a recent fitting formula. The Ü-decay half-lives (TÜ) have been calculated within the generalized density-dependent cluster model, where the microscopic Ü-core potential is determined in the double-folding model using M3Y-Reid nucleon-nucleon interaction, and the microscopic Coulomb potential is calculated by folding the charge density distributions of the two interacting nuclei. The Fermi distribution was assumed to represent the nuclear densities for protons and neutrons of the daughter nuclei, with four different sets of parameters consistent with an extensive amount of theoretical Dirac-Hartree-Bogoliubov calculations (DHB) and experimental (electron scattering experiments) results. Under normalization to the proton and neutron (N) numbers and study the behavior of logTÜ against neutron numbers of daughter nuclei for the isotopes of even-even elements, the different choices of the density distributions showed almost no effect on the general behavior clear similarity in the behavior for some elements, these elements have the proton pair in the emitted alpha comes from the same proton energy level. This correlate the logTÜ behavior for isotopes of an element and the proton energy levels of this element