Magnetic moments in calcium isotopes via a surface-interaction experiment

A rotation of the angular correlation of de-excitation γ-rays from 40Ca and 44Ca was observed in a tilted foil geometry. The signs and magnitudes of the magnetic moments of the 21+ of 44Ca and of the 31- level of 40Ca were determined to be g = -0.28+-0.11 and g = +0.52+-0.18, respectively. This experiment provides further information regarding the polarization of deeply bound electronic configurations produced by a surface-interaction mechanism and demonstrates the feasibility of the present technique for measuring signs and magnitudes of magnetic moments of picosecond nuclear levels. (author)