کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8187274 1528780 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bohr model description of the critical point for the first order shape phase transition
ترجمه فارسی عنوان
شرح مدل بحر برای نقطه بحرانی برای گذار فاز شکل اول
کلمات کلیدی
ایالت های جمعی، شکل انتقال فاز، نقطه بحرانی، همزیستی شکل، پتانسیل جنسی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
چکیده انگلیسی
The critical point of the shape phase transition between spherical and axially deformed nuclei is described by a collective Bohr Hamiltonian with a sextic potential having simultaneous spherical and deformed minima of the same depth. The particular choice of the potential as well as the scaled and decoupled nature of the total Hamiltonian leads to a model with a single free parameter connected to the height of the barrier which separates the two minima. The solutions are found through the diagonalization in a basis of Bessel functions. The basis is optimized for each value of the free parameter by means of a boundary deformation which assures the convergence of the solutions for a fixed basis dimension. Analyzing the spectral properties of the model, as a function of the barrier height, revealed instances with shape coexisting features which are considered for detailed numerical applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 776, 10 January 2018, Pages 26-31
نویسندگان
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