Levels in /sup 1/89Ir and /sup 1/91Ir observed in the (p,t) reaction

Levels in /sup 1/89Ir and /sup 1/91Ir were populated by the (p, t) reaction, using 34-MeV protons and isotopically enriched /sup 1/91Ir and /sup 1/93Ir targets. A number of low-lying positive-parity bands were observed. In addition the 11/2/sup -/(505) bandhead was also weakly populated. The 3/2 1/2/sup +/(400) states in /sup 1/89Ir and /sup 1/91Ir have similar but anomalous angular distributions. Four strongly populated states with L = 0 angular distributions are observed from 719 to 1261 keV in /sup 1/89Ir. For the same energy region in /sup 1/91Ir, the L = 0 states are less strongly populated.