Implications of the Ca−36S36 and Ca−38Ar38 difference in mirror charge radii on the neutron matter equation of state
Implications of the Ca−36S36 and Ca−38Ar38 difference in mirror charge radii on the neutron matter equation of state
复制标题
Ca-36S36 和 Ca-38Ar38 镜像电荷半径差异对中子物质状态方程的影响
DOI：
10.1103/physrevresearch.2.022035
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发表时间：
2020
影响因子：
4.2
通讯作者：
Maaß, B.
中科院分区：
文献类型：
--
作者：
Brown, B. A.;Minamisono, K.;Piekarewicz, J.;Hergert, H.;Garand, D.;Klose, A.;König, K.;Lantis, J. D.;Liu, Y.;Maaß, B.
不稳定核的电荷半径最近被确定并用于计算镜像核和镜像对之间的电荷半径差异。考虑到核饱和密度下对称能量的斜率与对称能量之间的相关性，我们推导出了emev，这就排除了大部分预测“刚性”状态方程的模型。这是基于核基态电磁探测的模型中最精确的测定。确定的范围与早期实验室实验和天体物理观测的分析一致，包括最近探测到的两颗中子星合并产生的引力波。
Charge radii of the unstableandnuclei were recently determined and used to compute differences in charge radii between mirror nucleifor theandmirror pairs. Given the correlation betweenand the slope of the symmetry energyat the nuclear saturation density, we deduceMeV, which rules out a large fraction of models that predict a “stiff” equation of state. This is the most precise determination ofin this model based on electromagnetic probes of nuclear ground states. The determined range is consistent with earlier analyses from both laboratory experiments and astrophysical observations, including the recent detection of gravitational waves from the merger of two neutron stars.