Abstract
High angular momentum states in were populated via the F,2pnRb and O,4nRb reactions. The 65 MeV and 65 MeV beams were provided by the Florida State University FN Tandem accelerator. Prompt γ-γ coincidences were measured for both reactions. Two additional γ cascades have been assigned to , 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 F,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.
- Received 26 March 1993
DOI:https://doi.org/10.1103/PhysRevC.48.1020
©1993 American Physical Society