عنوان المقالة:(Study of Phase Transitions and Critical Points in the Rare-Earth Region in the Framework of the Interacting Boson Model (IBM-1)
فؤاد عطية مجيد | Prof.Dr.Fouad A. Majeed | 5977
نوع النشر
مجلة علمية
المؤلفون بالعربي
Journal of Kufa-Physics
الملخص العربي
A systematic study of isotope chains in the rare–earth region is presented. The energy levels, E2 transition rates, and two–neutron separation energies are described by using the most general IBM-1 Hamiltonian for the chains For each isotope chain a general fit is performed in such a way that all parameters but one are kept fixed to describe the whole chain.In this region nuclei evolve from spherical to deformed shapes and a method based on catastrophe theory, in combination with a coherent state analysis to generate the IBM-1-1 energy surfaces, is used to identify critical phase transition points
تاريخ النشر
02/01/2011
الناشر
F. A. Majeed and K. S. Jassim
رابط الملف
تحميل (236 مرات التحميل)
الكلمات المفتاحية
quantum phase transitions, catastrophe theory, interacting boson model
رجوع