Gamma-gamma angular correlations of transitions in Sr 94 and Sr 96
1980
Angular-correlation measurements were made on ten direct cascades and four skip cascades in $^{94}\mathrm{Sr}$ and on nine direct cascades in $^{96}\mathrm{Sr}$. These nuclei were populated by beta decay of isotopically pure $^{94}\mathrm{Rb}$ and $^{96}\mathrm{Rb}$ ion beams produced by fission and on-line mass separation. Correlations were measured for most of the intense transitions in coincidence with the ${2}^{+}$\ensuremath{\rightarrow}${0}^{+}$ ground-state transition in both nuclei and two additional transitions in $^{94}\mathrm{Sr}$. Five levels in $^{94}\mathrm{Sr}$ are given definite spin assignments and four levels tentative assignments. In $^{96}\mathrm{Sr}$ definite spin assignments are made for four levels and tentative assignments for five levels. Values are listed for angular-correlation coefficients and, where applicable, multipole mixing ratios. Level systematics of neutron-rich even mass Sr isotopes are discussed within the context of assignments made here.
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