Structure effects of the two protons - two neutrons correlations

Details Structure effects of the two protons - two neutrons correlations Structure effects of the two protons - two neutrons correlations

2008-12-29

arxiv.org/abs/0812.4825v1

Rom.J.Phys.37:107-113,1992

Physics

Nuclear Physics

Nuclear Theory

8 pages

Scientific paper

The proton-neutron 2 particles - 2 holes correlations in superfluid nuclei, described by an effective, Josephson-type interaction ~[(P+N-)+(P-N+)], are studied within a boson approximation. The strength of this interaction is estimated using the symmetry energy for an even-even system of nucleons lying on the same degenerate level. The RPA vacuum is obtained explicitly, and the electroexcitation to isovector monopole states of oscillatory pair exchange between the proton and neutron superfluids is briefly discussed.

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