Lifetimes of excited states ofMo92

Levels in ${}_{}{}^{92}{}_{}{}^{}\mathrm{Mo}$ at 1.509 ($2^{+}$), 3.091 ($2^{+}$), 3.925 ($2^{+}$), 3.942, and 4.634 MeV have been excited by bremsstrahlung. Based on the angular distributions of the resonantly scattered $\gamma$ lines, spin one can be unambiguously assigned to the 3.942- and 4.634-MeV levels. The lifetimes deduced from the scattering yields are compared with the results of two sets of Doppler shift attenuation experiments which had been analyzed using different theories for the attenuation factor $F\left(\tau \right)$.