TRANSITION STRENGTHS IN RB-79

High angular momentum states in 79Rb were populated via the Cu-63(F-19,2pn)79Rb and Cu-65(O-18,4n)79Rb reactions. The 65 MeV F-19 and 65 MeV O-18 beams were provided by the Florida State University FN Tandem accelerator. Prompt gamma-gamma coincidences were measured for both reactions. Two additional gamma cascades have been assigned to 79Rb, including a new high-excitation structure dominated by dipole transitions. Firm spin assignments were made for the first time for a number of states by means of directional correlation ratios and an angular distribution measurement using the Cu-63(F-19,2pn) reaction. The Doppler-shift attenuation method was used to determine lifetimes for states and their respective side-feeding times in both the yrast positive-parity and yrast negative-parity states. Transition quadrupole moments were deduced from the transition strengths and compared with those predicted by Woods-Saxon cranking calculations. The energy spacings and mixing ratios were compared with particle-rotor calculations.