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arxiv: 0710.0321 · v1 · submitted 2007-10-01 · ⚛️ nucl-th · nucl-ex

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Wobbling excitations at high spins in A~160

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classification ⚛️ nucl-th nucl-ex
keywords excitationstransitionwobblinganalysisassociatedaxially-symmetricbackbendingdetermines
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We found that in 156Dy and 162Yb the lowest odd spin gamma-vibrational states transform to the wobbling excitations after the backbending, associated with the transition from axially-symmetric to nonaxial shapes. The analysis of quadrupole electric transitions determines uniquely the sign of the gamma-deformation in both nuclei after the transition point.

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