Determining the Density Content of Symmetry Energy and Neutron Skin: An Empirical Approach

被引：89
作者：
Agrawal, B. K. [1 ]
De, J. N. [1 ]
Samaddar, S. K. [1 ]
机构：
[1] Saha Inst Nucl Phys, Kolkata 700064, India
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 26期
关键词：
NUCLEI; RADII;
D O I：
10.1103/PhysRevLett.109.262501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The density dependence of nuclear symmetry energy remains poorly constrained. Starting from precise empirical values of the nuclear volume and surface symmetry energy coefficients and the nuclear saturation density, we show how in the ambit of microscopic calculations with different energy density functionals, the value of the symmetry energy slope parameter L along with that for neutron skin can be put in tighter bounds. The value of L is found to be L = 64 +/- 5 MeV. For Pb-208, the neutron skin thickness comes out to be 0.188 +/- 0.014 fm. Knowing L, the method can be applied to predict neutron skin thicknesses of other nuclei. DOI: 10.1103/PhysRevLett.109.262501
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页数：4
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