Lifetimes of levels in ${}^{80}\mathrm{Rb}$ have been measured using the Doppler shift attenuation method. The high-spin states have been populated through the ${}^{55}\mathrm{Mn}{(}^{28}\mathrm{Si},2pn)$ reaction at 90 MeV. Collective enhancement was observed in the $B\left(E2\mathrm{}\right)\mathrm{}$ values of the two most strongly populated bands, while the $B\left(M1\mathrm{}\right)\mathrm{}$ values of the yrast band exhibit a large alternating pattern. Transition quadrupole moments were deduced from $E2\mathrm{}$ transition strengths and compared with those predicted by Woods-Saxon cranking calculations.

• Received 28 June 1999

DOI:https://doi.org/10.1103/PhysRevC.61.044316