Constraining nuclear symmetry energy with the charge radii of mirror-pair nuclei
Constraining nuclear symmetry energy with the charge radii of mirror-pair nuclei
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DOI：
10.1007/s41365-023-01269-1
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发表时间：
2023-03
影响因子：
2.8
通讯作者：
R. An;Shuai Sun;Li-Gang Cao;Feng-Shou Zhang
中科院分区：
文献类型：
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作者：
R. An;Shuai Sun;Li-Gang Cao;Feng-Shou Zhang
核电荷半径在确定同位旋非对称核物质物态方程中起着至关重要的作用。基于镜像伙伴核电荷半径差与核饱和密度下对称能斜率参数L之间的相关性，对有限核中标定的斜率参数L进行了分析.在这项研究中，相对论和非相对论的能量密度泛函约束核对称性能量通过现有的镜像对核数据库Ca-S，Ca-Ar，和Ni-Fe。在饱和密度下，计算得到的核对称能在29.89 - 31.85MeV之间，对称能L基本上覆盖了22.50 - 51.55MeV。在灵敏度密度为30.52 - 39.76MeV的区间内提取的能量密度为0.01MeV。
The nuclear charge radius plays a vital role in determining the equation of state of isospin asymmetric nuclear matter. Based on the correlation between the differences in charge radii of mirror-partner nuclei and the slope parameter (L) of symmetry energy at the nuclear saturation density, an analysis of the calibrated slope parameterLwas performed in finite nuclei. In this study, relativistic and nonrelativistic energy density functionals were employed to constrain the nuclear symmetry energy through the available databases of the mirror-pair nucleiCa–S,Ca–Ar, andNi–Fe. The deduced nuclear symmetry energy was located in the range 29.89–31.85 MeV, andLof the symmetry energy essentially covered the range 22.50–51.55 MeV at the saturation density. Moreover, the extractedat the sensitivity densitywas located in the interval range 30.52–39.76 MeV.