M1 bands and intruder bands in 113In

High spin states in 113In have been established up to 6.2 MeV in excitation energy and to a tentative spin of (43/2-) through the reaction 110Pd(7Li, 4n)113In at a beam energy of 40 MeV. In-beam measurements involved γ-γ coincidences, angular distribution of emitted gamma rays, and directional correlation of oriented states. M1 bands consisting of ΔI=1 dipole transitions have been observed. Possible quasiparticle configurations suggest that these bands are similar to the shears bands observed in Pb nuclei. Two intruder bands based on the πh11/2 orbital and πg7/2 orbital have been observed. Results of the total Routhian surface and cranked shell model calculations are compared with the experimental data. Alignment features of the intruder bands in the N=62 and 64 isotones are discussed. copyright 1997 The American Physical Society