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Generalization of the $N_pN_n$ Scheme and the Structure of the Valence Space

Y. M. Zhao·R. F. Casten·A. Arima
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Abstract

The $N_pN_n$ scheme, which has been extensively applied to even-even nuclei, is found to be a very good benchmark for odd-even, even-odd, and doubly-odd nuclei as well. There are no apparent shifts in the correlations for these four classes of nuclei. The compact correlations highlight the deviant behavior of the Z=78 nuclei, are used to deduce effective valence proton numbers near Z=64, and to study the evolution of the Z=64 subshell gap.

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Y. M. Zhao, R. F. Casten, A. Arima. 2004-06-03. Generalization of the $N_pN_n$ Scheme and the Structure of the Valence Space. https://doi.org/10.1103/physrevlett.85.720

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