Empirical pairing gaps and neutron-proton correlations

Abstract

Analysis of various mass relations connected with neutron-proton correlations in atomic nuclei is carried out. On the example of $N=Z$ chain it is shown that for self-adjoint nuclei various formulas proposed in literature for $np$ pairing energy estimations lead to similar results. Significant differences between the calculation methods arise when nuclei with $N\ne Z$ are considered, which allows to show the complexity of neutron-proton correlations in different types of atomic nuclei and to make some assumptions on the correspondence of a mass ratio to the real effect of $np$ pairing. The Shell Model parametrization of binding energy makes it possible to arrive to additional conclusions on the structure of mass formulas and their interrelationships with one another.

arXiv comment15 pages, 9 figures, to be published in Chinese Physics C

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Cited by in corpus (3)

• Nuclear mass predictions based on convolutional neural network
• Pairing in Nuclear Matter and Finite Nuclei
• Quasideuterons in Light Nuclei