Calculation of microscopic nuclear level densities based on covariant density functional theory

被引：0
|
作者：
Kun-Peng Geng
Peng-Xiang Du
Jian Li
Dong-Liang Fang
机构：
[1] Jilin University,College of Physics
[2] Chinese Academy of Sciences,Institute of Modern Physics
来源：
Nuclear Science and Techniques | 2023年 / 34卷
关键词：
Nuclear level density; Covariant density functional theory; Combinatorial method;
D O I：
暂无
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学科分类号：
摘要：
In this study, a microscopic method for calculating the nuclear level density (NLD) based on the covariant density functional theory (CDFT) is developed. The particle-hole state density is calculated by a combinatorial method using single-particle level schemes obtained from the CDFT, and the level densities are then obtained by considering collective effects such as vibration and rotation. Our results are compared with those of other NLD models, including phenomenological, microstatistical and nonrelativistic Hartree–Fock–Bogoliubov combinatorial models. This comparison suggests that the general trends among these models are essentially the same, except for some deviations among the different NLD models. In addition, the NLDs obtained using the CDFT combinatorial method with normalization are compared with experimental data, including the observed cumulative number of levels at low excitation energies and the measured NLDs. The CDFT combinatorial method yields results that are in reasonable agreement with the existing experimental data.
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