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arXiv · 1810.11210

Empirical pairing gaps and neutron-proton correlations

B. S. Ishkhanov·S. Sidorov·T. Tretyakova·E. Vladimirova
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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.

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B. S. Ishkhanov, S. Sidorov, T. Tretyakova, E. Vladimirova. 2018-10-26. Empirical pairing gaps and neutron-proton correlations. https://doi.org/10.1088/1674-1137%2F43%2F1%2F014104

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