Onset of deformation at N = 112 in Bi nuclei

Ne,6n) fusion evaporation reaction at 130 MeV. The γγ coincidence data were taken using an array of 8clover HPGe detectors. The spin and parity assignments of the excited states have been made fromthe measured directional correlation from oriented states (DCO) ratios and integrated polarizationasymmetry (IPDCO) ratios. The results show, for the first time, the evidence of a rotational likeband based on a 13/2