Core polarization and magnetic moment of some odd-mass nuclei around N = 50

Abstract

The effect of core polarization on the magnetic moment is studied for odd-mass nuclei around N = 50: 85, 87 Kr, 87, 89 Sr, 91 Zr and 89 Y . The calculation is done in the framework of the modified Tamm-Dancoff approximation (MTDA). The ground-state wave function is calculated using the configuration space of p̌f $ ̆ and šdg $ ̆ shells. The core polarization correction to the magnetic moment is considerable for all the nuclei, except 89Y, and it depends upon the particular form of the interaction. For 89Y the last odd proton is in the p 1 2 level and the smallness of the correction is supported by the observed value of the magnetic moment.