Abstract
We investigate the effects of the interaction, which effectively adds a density-dependent term to the LS channel, on the isotopes shifts of the Pb nuclei. With the strength so as to keep the splitting of the single-nucleon orbits, the density dependence in the LS channel tends to shrink the wave functions of the orbits while making the functions distribute more broadly. Thereby the kink in the isotope shifts of the Pb nuclei at becomes stronger, owing to the attraction from neutrons occupying in . The density dependence in the LS channel enables us to reproduce the data of the isotope shifts by the Hartree-Fock-Bogoliubov calculations in a long chain of neutron numbers, even without degeneracy between the and levels. We exemplify it by the semirealistic M3Y-P6 interaction.
- Received 4 December 2014
DOI:https://doi.org/10.1103/PhysRevC.91.021302
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