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Abstract: An alternative way to constrain the density dependence of the symmetry energywith the slope of the neutron skin thickness of nuclei which shows a linearrelation to both the isospin asymmetry and the nuclear charge with a form ofZ^{2-3} is proposed. The linear dependence of the neutron skin thickness on thenuclear charge and isospin asymmetry is systematically studied with the datafrom antiprotonic atom measurement experimentally and the extended Thomas-Fermiapproach incorporated the Skyrme energy density functional theoretically. Anobviously linear relationship between the slope parameter L of the symmetryenergy and the slope of the neutron skin thickness on the isospin asymmetry canbe found by adopting 66 Skyrme interactions in the calculation. Combining theavailable experimental data, the constraint of 16


Autor: Min Liu, Zhuxia Li, Ning Wang, Fengshou Zhang

Fuente: https://arxiv.org/



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