Relative spins and excitation energies of superdeformed bands in 190Hg: Further evidence for octupole vibration

B. Crowell , M.P. Carpenter , R.V.F. Janssens , D.J. Blumenthal , Timar , A.N. Wilson , J.F. Sharpey-Schafer , T. Nakatsukasa

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I. Ahmad A. Astier F. Azaiez L. du Croux B.J.P. Gall F. Hannachi T.L. Khoo A. Korichi T. Lauritsen A. Lopez-Martens M. Meyer D. Nisius E.S. Paul M.G. Porquet N. Redon

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keywords bandbandsenergiesexcitedsuperdeformedtransitionsbeencalculations

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An experiment using the Eurogam Phase II gamma-ray spectrometer confirms the existence of an excited superdeformed (SD) band in 190Hg and its very unusual decay into the lowest SD band over 3-4 transitions. The energies and dipole character of the transitions linking the two SD bands have been firmly established. Comparisons with RPA calculations indicate that the excited SD band can be interpreted as an octupole-vibrational structure.

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Relative spins and excitation energies of superdeformed bands in 190Hg: Further evidence for octupole vibration

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