Lifetimes of states inTc97

The Doppler-shift-attenuation method has been employed following the ${}_{}{}^{97}{}_{}{}^{}\mathrm{Mo}(\mathrm{p},\mathrm{n}\gamma ){}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$ reaction at 3.5 MeV to determine lifetimes for 11 states in ${}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$ and lower limits for 12 additional states. The lifetimes were extracted from singles spectra taken with the aid of an anti-Compton spectrometer at seven angles between 0° and 90° to the beam direction by employing centroid shift analysis of the data. For a number of transitions in ${}_{}{}^{97}{}_{}{}^{}\mathrm{Tc}$, values or limits for $B\left(E1\right)$, $B\left(E2\right)$, and $B\left(M1\right)$ were obtained. The present results are compared with calculations based on the cluster-core coupling model of Bargholtz and Beshai.