Abstract
The selfconsistent collective-coordinate method proposed by Marumori, Maskawa, Sakata and Kuiryama is applied to the analysis of the double gamma-vibrational states in 168Er. It is found that the potential energy surface calculated microscopically has the minimum at γ≠0. The calculation predicts the double γ-vibrational states to appear in the region of excitation energy 2.0 ∼ 2.5 MeV.

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