SKYRME-HARTREE-FOCK APPROACH TO SPHERICAL NUCLEI WITH DENSITY-DEPENDENT PAIRING CORRELATIONS

The ground-state properties of spherical nuclei over the entire period ic table are investigated by the Skyrme-Hartree-Fock approach with new force parameters SKI4 [P. G. Reinhard and H. Flocard, Nucl. Phys. A58 4 467 (1995)] plus a density-dependent pairing correlation. By introdu cing the density-dependent pairing correlation in the Skyrme-Hartree-F ock model with SKI4, both the isospin degree of freedom and the nucleo n-nucleon correlation have been suitably included in the theory. The t heoretical results agree very well with experimental data of binding e nergies, single particle energies and radii of spherical nuclei. The i sotope shifts of charge radii in Ca, Ni, Sn, and Pb are also well repr oduced.