Abstract
The collective nature of states in 66Zn has been studied by carrying out a deformed configuration mixing shell model calculation in (1 p 3 2 0 f 5 2 1 p 1 2 0 g 9 2 ) model space. An effective interaction obtained for this space by Kuo has been used. The collective structure for 2 positive-parity bands and 5 negative-parity bands is identified. A qualitative understanding of the backbending at the J = 6 + state in the yrast positive-parity band is given in terms of the band crossing of the ground-state band and the more deformed excited band arising from 2p2h excitation to the g 9 2 orbit. Several high-spin members of the observed bands as well as in-band E2 transition strengths have been predicted.
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