Magnetic moment measurements in 86Zr.

The transient-field technique has been used to measure the [ital g] factors of yrast states in [sup 86]Zr over the spin region [ital I]=8[h bar]--14[h bar] in order to ascertain the nature of the alignments at the first and second backbends. The states of interest were populated in the reaction [sup 12]C([sup 77]Se,3[ital n]) at 260 MeV. The results demonstrate that the first crossing at the 8[sub 1][sup +] state involves the alignment of neutron [ital g][sub 9/2] quasiparticles, and that proton [ital g][sub 9/2] quasiparticles align at higher spin.