Transition from collectivity to single-particle degrees of freedom from magnetic moment measurements in $^{82}_{38}$Sr and $^{90}_{38}$Sr*

The $g$ factors of excited states in the unstable isotopes $^{82}$Sr and $^{90}$Sr were measured by the transient field technique. Beams of $^{78}$Kr and $^{86}$Kr from the K500 cyclotron at Texas A\&M University were accelerated to energies just above the Coulomb barrier on carbon to produce the strontium isotopes via an $\alpha$ particle pickup. We report on the $\alpha$ transfer reaction and on the simultaneous $g$ factor measurements of the Coulomb-excited Kr isotopes.