Level spins and multipole mixing ratios of the transitions inMo94

Abstract

Directional correlations and polarization-directional correlations have been measured for several $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ cascades in $^{94}\mathrm{Mo}$ populated from the decay of $^{94}\mathrm{Tc}^{g}$. NaI(Tl)-Ge(Li) detectors were used in both experiments. Combination of the results of those measurements gives unique spin-parity assignments of ${6}^{+}$ for both the 2872.5 and 3339.5 keV levels. The determined $\frac{E2}{M1}$ mixing ratios are $\ensuremath{\delta}(449)={\ensuremath{-}0.04}_{\ensuremath{-}0.04}^{+0.08}$, $\ensuremath{\delta}(742)=0.65\ifmmode\pm\else\textpm\fi{}0.15$, and $\ensuremath{\delta}(916)=\ensuremath{-}0.04\ifmmode\pm\else\textpm\fi{}0.04$.RADIOACTIVITY $^{94}\mathrm{Tc}$ from $^{93}\mathrm{Nb}(\ensuremath{\alpha},3n)$; measured $\ensuremath{\gamma}\ensuremath{\gamma}(0)$ and $\ensuremath{\gamma}\ensuremath{\gamma}(90 \mathrm{LP})$ (Linearpolarization correlation). Deduced ${J}^{\ensuremath{\pi}}$ $\ensuremath{\delta}(\frac{E2}{M1})$. Ge(Li) and NaI(Tl) detectors.