Collective and noncollective states in 66Zn

Excited states in the Zn-66 nucleus were populated via a Fe-56(C-12, 2p gamma) fusion-evaporation reaction at a beam energy of approximate to 62 MeV. The deexciting gamma rays were detected using the Indian National Gamma Array (INGA). The level scheme of the Zn-66 nucleus has been updated by placing several new y rays as well as by assigning the spin and parity of various excited states from the present spectroscopic results. The microscopic structure of the observed states have been investigated in the light of large shell-model calculations. The shape of this nucleus in the low-spin regime has been studied under the framework of total Routhian surface (TRS) calculations. The lifetime of first 3(-) state at 2826 keV is experimentally measured using the Doppler-shift attenuation method and the deduced B(E1) value indicates the presence of octupole collectivity in this nucleus.

Automated summary

In this experiment, excited states in the Zn-66 nucleus were populated and their properties were determined through experimental observations and theoretical calculations, revealing the presence of octupole collectivity in this nucleus.