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arXiv · 1002.4325

Symmetry energy at subnuclear densities deduced from nuclear masses

Kazuhiro Oyamatsu·Kei Iida
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Abstract

We examine how nuclear masses are related to the density dependence of the symmetry energy. Using a macroscopic nuclear model we calculate nuclear masses in a way dependent on the equation of state of asymmetric nuclear matter. We find by comparison with empirical two-proton separation energies that a smaller symmetry energy at subnuclear densities, corresponding to a larger density symmetry coefficient L, is favored. This tendency, which is clearly seen for nuclei that are neutron-rich, nondeformed, and light, can be understood from the property of the surface symmetry energy in a compressible liquid-drop picture.

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Kazuhiro Oyamatsu, Kei Iida. 2010-04-19. Symmetry energy at subnuclear densities deduced from nuclear masses. https://doi.org/10.1103/physrevc.81.054302

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