2born (2born) wrote,

К статистике уровней ядер

Level density within a micro-macroscopic approach: https://arxiv.org/abs/2006.03868
A.G. Magner, A.I. Sanzhur, S.N. Fedotkin, A.I. Levon, S. Shlomo
Statistical level density ρ(E,A,M) is derived for nucleonic system with a given energy E, particle number A and angular momentum projection M to a symmetry axis in the mean-field approximation beyond the standard saddle-point method (SPM). This level density reaches the two limits; the well-known SPM grand-canonical ensemble limit for a large entropy S related to large excitation energies, and the finite micro-canonical limit for a small combinatorical entropy S at low excitation energies. The inverse level density parameter K as function of the particle number A in the semiclassical periodic orbit theory, taking into account shell effects, is calculated and compared with experimental data.
Comments: 7 pages, 2 figures
Tags: наука, разгребая arXiv'ы, хаос

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