Constraint on Nuclear Symmetry Energy From Nuclear Charge Dependent Neutron Skin Thickness of Nuclei  

作　　者：LIU Min LI Zhu-xia 

机构地区：[1]College of Physics and Technology, Guangxi Normal University [2]不详

出　　处：《Annual Report of China Institute of Atomic Energy》2009年第1期146-146,共1页中国原子能科学研究院年报（英文版）

基　　金：Supported by National Natural Science Foundation of China

摘　　要：We propose a way to constrain the density dependence of the symmetry energy with the data of neutron skin thickness for a series of nuclei obtained from antiprotonic atom measurement.We firstWe propose a way to constrain the density dependence of the symmetry energy with the data of neutron skin thickness for a series of nuclei obtained from antiprotonic atom measurement. We first show that the neutron skin thickness is correlated with both the charge number and the isospin asymmetry of nuclei. The optimized parameters for the correlation to the charge and the isospin asymmetry are obtained from experimental data. Then, we systematically calculate the neutron skin thickness of the nuclei for which the experimental data are available with the semi-classical extended Thomas-Fermi approximation up to the second order （ETF2） incorporated the Skyrme energy density functional and Coulomb energy density. 66 Skyrme interactions are applied in the calculations.

关 键 词：原子核 对称能 皮肤厚度 Skyrme相互作用 核电荷 核能源 中子皮厚度 同位旋相关 

分 类 号：O571.2[理学—粒子物理与原子核物理] O572[理学—物理]