Abstract

A displacement of energy levels (so-called odd-even shift) has been observed in the K = 0 rotation band of odd deformed nuclei. In the present paper it is shown that the theory of collective rotation proposed by Peierls and Yoccoz explains this displacement, but predicts in addition different moments of inertia for the even and odd spin levels. A discussion is presented in terms of the unified model, on the basis of which an explanation of the odd-even shift has been given previously.

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