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Global features of proton-neutron interactions and symmetry energy

K. Kaneko·M. Hasegawa
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Abstract

We study global features of proton-neutron (p-n) interactions and symmetry energy over a wide range of nuclei, using a schematic model interaction with four forces proposed recently. Calculations are performed by the BCS approximation in N,Z=20-50 and N,Z=50-82 regions. The experimental double differences of binding energies and symmetry energy are reproduced quite well. It is shown that the isoscalar p-n interactions with all J are indispensable for explaining the binding energies of not only $N\approx Z$ but also N>Z nuclei in the A=40-160 region.

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K. Kaneko, M. Hasegawa. 1999-07-07. Global features of proton-neutron interactions and symmetry energy. https://doi.org/10.1143/ptp.106.1179

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