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arXiv · 2212.08002

Coexistence of quartets and pairs in even-even $N>Z$ nuclei

M. Sambataro·N. Sandulescu·D. Gambacurta
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Abstract

We analyse the structure of the ground states of even-even $N>Z$ nuclei with nucleons moving in the same major shell and interacting via realistic two-body forces of shell-model type. We express the ground states of these nuclei as a product of a quartet term, which represents the $N = Z$ subsystem, and a pair condensate built with the excess neutrons. The accuracy of this approximation is discussed for nuclei with valence nucleons in the $sd$ and $pf$ major shells.

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M. Sambataro, N. Sandulescu, D. Gambacurta. 2022-12-15. Coexistence of quartets and pairs in even-even $N>Z$ nuclei. https://doi.org/10.1016/j.nuclphysa.2023.122675

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