Effective interaction for pf-shell nuclei -: art. no. 061301

An effective interaction is derived for use in the full pf basis. Starting from a realistic G-matrix interaction, 195 two-body matrix elements and four single-particle energies are determined by fitting to 699 energy data in the mass range 47-66. The derived interaction successfully describes various structures of pf-shell nuclei. As examples, systematics of the energies of the first 2(+) states in the Ca, Ti, Cr, Fe, and Ni isotope chains and energy levels of Ni-56,Ni-57,Ni-58 are presented. The appearance of a new magic number 34 is seen.