Mirror Charge Radii and the Neutron Equation of State

被引：81

作者：

Brown, B. Alex ^{[1
,2
]}

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 119卷 / 12期

基金：

美国国家科学基金会;

关键词：

ELASTIC ELECTRON-SCATTERING; X-RAY MEASUREMENTS; NUCLEI; DISTRIBUTIONS; ISOTOPES;

D O I：

10.1103/PhysRevLett.119.122502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The differences in the charge radii of mirror nuclei are shown to be proportional to the derivative of the neutron equation of state and the symmetry energy at nuclear matter saturation density. This derivative is important for constraining the neutron equation of state for use in astrophysics. The charge radii of several neutron-rich nuclei are already measured to the accuracy of about 0.005 fm. Experiments at isotope-separator and radioactive-beam facilities are needed to measure the charge radii of the corresponding proton-rich mirror nuclei to a similar accuracy. It is also shown that neutron skins of nuclei with N = Z depend upon the value of the symmetry energy at a density of 0.10 nucleons/fm(3).

引用

页数：5

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