RELATIVISTIC HARTREE-BOGOLIUBOV DESCRIPTION OF GROUND-STATE PROPERTIES OF NI AND SN ISOTOPES

Relativistic Hartree-Bogoliubov (RHB) theory is applied in the descrip tion of the ground-state properties of Ni and Sn isotopes. The NL3 par ameter set is used for the effective mean-field Lagrangian, and pairin g correlations are described by the pairing part of the finite range G ogny interaction D1S. Fully self-consistent RHB solutions are calculat ed for the Ni (28 less than or equal to N less than or equal to 50) an d Sn (50 less than or equal to N less than or equal to 82) isotopes. B inding energies, neutron separation energies, and proton and neutron r ms radii are compared with experimental data. The model predicts a red uction of the spin-orbit potential with the increase of the number of neutrons. The resulting energy splittings between spin-orbit partners are discussed, as well as pairing properties calculated with the finit e range effective interaction in the pp channel. [S0556-2813(98)02205- 5].