HIGH-SPIN STATES IN ODD-ODD LU-164

High-spin states in odd-odd Lu-164 have been studied using F-19 and Na -13 induced fusion-evaporation reactions, Three strongly coupled rotat ional bands have been established and three decoupled bands were tenta tively assigned to Lu-164. The band crossing frequencies, energy signa ture splittings, and relative transition probabilities were deduced fr om experimental data and compared with neighboring even-even and odd-A nuclei, An anomalously large band crossing frequency was observed in the excited band, and a pronounced signature inversion was observed in the yrast band of Lu-164. These anomalies may be associated with resi dual neutron-proton interactions.