Collective vibrations in ⁶⁶Zn nuclei

The aim of present investigation is to provide additional information on excited states of ⁶⁶Zn nucleus in the above discussed scenario. The excited states in ⁶⁶Zn are populated through ⁵⁶Fe(¹²C, 2p)⁶⁶Zn reaction at beam energy of 62 MeV at BARC-TIFR Pelletron Accelerator facility. The de-exciting γ-rays were detected by the Indian National Gamma Array (INGA), at TIFR consisting of 15 clover detectors using digital data acquisition system based on Pixie-16 modules by XIA LLC. We have done polarisation asymmetry of the gamma rays of this nucleus for the first time and a low-lying negative parity band has been confirmed which is connected to positive parity band via strong interband electric diapole (E1) transitions. These E1 transitions may be attributed to octupole vibrations and/or other reflection asymmetric shapes in this nucleus. TRS calculations has been performed for the nucleus and it predicted an oblate in the ground state which is also consistent with the shape calculations by Moller et al.. Further details of obtained results and shape evolution in this mass region will be presented during the conference