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arXiv · 0711.4455

Long standing problem of 210Bi and the realistic neutron-proton effective interaction

L. Coraggio·A. Covello·A. Gargano·N. Itaco
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Abstract

The odd-odd nucleus 210Bi is studied within the framework of the shell model using effective two-body matrix elements derived from the CD-Bonn nucleon-nucleon potential. The experimental energies of the proton-neutron multiplet ph9/2 ng9/2 are remarkably well reproduced by the theory, which accounts for the 1- state being the ground state instead of the 0- predicted by the Nordheim strong coupling rule. It is shown that the core-polarization effects are crucial to produce this inversion. The similarity between neutron-proton multiplets in the 132Sn and 208Pb regions is discussed in connection with the effective interaction.

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L. Coraggio, A. Covello, A. Gargano, N. Itaco. 2007-12-18. Long standing problem of 210Bi and the realistic neutron-proton effective interaction. https://doi.org/10.1103/physrevc.76.061303

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