Residual proton-neutron interactions and the $N_{\rm p} N_{\rm n}$ scheme

Details Residual proton-neutron interactions and the $N_{\rm p} N_{\rm n}$ scheme Residual proton-neutron interactions and the $N_{\rm p} N_{\rm n}$ scheme

2010-07-14

arxiv.org/abs/1007.2253v1

Physics

Nuclear Physics

Nuclear Theory

four pages, three figures, Physical Review C, in press

Scientific paper

We investigate the correlation between integrated proton-neutron interactions obtained by using the up-to-date experimental data of binding energies and the $N_{\rm p} N_{\rm n}$, the product of valence proton number and valence neutron number with respect to the nearest doubly closed nucleus. We make corrections on a previously suggested formula for the integrated proton-neutron interaction. Our results demonstrate a nice, nearly linear, correlation between the integrated p-n interaction and $N_{\rm p} N_{\rm n}$, which provides us with a firm foundation of the applicability of the $N_{\rm p} N_{\rm n}$ scheme to nuclei far from the stability line.

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