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The two-proton shell gap in Sn isotopes

P. Fleischer·P. Kluepfel·T. Cornelius·T. J. Buervenich·S. Schramm·J. A. Maruhn·P. -G. Reinhard
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Abstract

We present an analysis of two-proton shell gaps in Sn isotopes. As the theoretical tool we use self-consistent mean-field models, namely the relativistic mean-field model and the Skyrme-Hartree-Fock approach, both with two different pairing forces, a delta interaction (DI) model and a density-dependent delta interaction (DDDI). We investigate the influence of nuclear deformation as well as collective correlations and find that both effects contribute significantly. Moreover, we find a further significant dependence on the pairing force used. The inclusion of deformation plus correlation effects and the use of DDDI pairing provides agreement with the data.

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P. Fleischer, P. Kluepfel, T. Cornelius, T. J. Buervenich, S. Schramm, J. A. Maruhn, P. -G. Reinhard. 2004-08-11. The two-proton shell gap in Sn isotopes. https://doi.org/10.1140/epja%2Fi2004-10054-4

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