Shape effects in h112 and g72 bands in Tm159

The 72[523] and 72[404] bands are observed in Tm159 to I=612 and 432, respectively, well beyond the i132 neutron backbend. Before the backbend, the 72[523] band exhibits large signature splitting, the 72[404] none, which is interpreted as resulting from the very different driving influences of the K=72, h112, and g72 orbits, respectively, on the core triaxiality. The i132 neutron alignment changes the signaure splitting in each band as a result …