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Surface diffuseness correction in global mass formula

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arxiv 1405.2616 v1 pith:TB3VBB72 submitted 2014-05-12 nucl-th astro-ph.IM

classification nucl-thastro-ph.IM
keywords massneutronnucleiaccuracyformulasurfaceavailablecorrection
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By taking into account the surface diffuseness correction for unstable nuclei, the accuracy of the macroscopic-microscopic mass formula is further improved. The rms deviation with respect to essentially all the available mass data falls to 298 keV, crossing the 0.3 MeV accuracy threshold for the first time within the mean-field framework. Considering the surface effect of the symmetry potential which plays an important role in the evolution of the "neutron skin" toward the "neutron halo" of nuclei approaching the neutron drip line, we obtain an optimal value of the symmetry energy coefficient J=30.16 MeV. With an accuracy of 258 keV for all the available neutron separation energies and of 237 keV for the alpha-decay Q-values of super-heavy nuclei, the proposed mass formula is particularly important not only for the reliable description of the r-process of nucleosynthesis but also for the study of the synthesis of super-heavy nuclei.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Directly probing existence of $\alpha$-cluster structure in $^{20}$Ne by relativistic heavy-ion collisions

    nucl-th 2025-02 conditional novelty 6.0 of 10

    In simulations of 20Ne+20Ne collisions, the scaled yield ratio of spectator neutrons to charged spectator nuclei is reduced by 20 to 25 percent when 20Ne has alpha-cluster structure, providing a proposed direct probe.

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