Volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation model

被引：23
|
作者：
Antonov, A. N. [1 ]
Gaidarov, M. K. [1 ]
Sarriguren, P. [2 ]
Moya de Guerra, E. [3 ]
机构：
[1] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia 1784, Bulgaria
[2] CSIC, IEM, Serrano 123, E-28006 Madrid, Spain
[3] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Atom Mol & Nucl, Grp Fis Nucl,Unidad Asociada UCM CSIC IEM, E-28040 Madrid, Spain
来源：
PHYSICAL REVIEW C | 2016年 / 94卷 / 01期
关键词：
STATISTICAL-THEORY; ISOSPIN; STATE; MASSES; MATTER;
D O I：
10.1103/PhysRevC.94.014319
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The volume and surface components of the nuclear symmetry energy (NSE) and their ratio are calculated within the coherent density fluctuation model (CDFM). The estimations use the results of the model for the NSE in finite nuclei based on the Brueckner energy-density functional for nuclear matter. In addition, we present results for the NSE and its volume and surface contributions obtained by using the Skyrme energy-density functional. The CDFM weight function is obtained using the proton and neutron densities from the self-consistent HF+BCS method with Skyrme interactions. We present and discuss the values of the volume and surface contributions to the NSE and their ratio obtained for the Ni, Sn, and Pb isotopic chains, studying their isotopic sensitivity. The results are compared with estimations of other approaches which have used available experimental data on binding energies, neutron-skin thicknesses, excitation energies to isobaric analog states (IAS), and also with results of other theoretical methods.
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页数：12
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