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Lifetimes of the superdeformed band in 192Hg

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  • P. Willsau
  • A. Korichi
  • F. Hannachi
  • H. Hubel
  • W. Korten
  • M. Neffgen
  • F. Azaiez
  • C. Bourgeois
  • J. Duprat
  • N. Perrin
  • N. Poffé
  • H. Sergolle
  • G. Bastin
  • I. Deloncle
  • B. Gall
  • M. Kaci
  • M.G. Porquet
  • C. Schuck
  • J. Simpson
  • R. Duffait
  • Y. Le Coz
  • M. Meyer
  • N. Redon
  • G. De France
  • A.G. Smith
  • C.W. Beausang
  • E.S. Paul
  • J.F. Sharpey-Schafer
  • R.M. Clark
  • R. Wadsworth
  • I. Ahmad
  • M.P. Carpenter
  • R.G. Henry
  • R.V.F. Janssens
  • T.L. Khoo
  • T. Lauritsen
  • J.R. Hughes
  • H.J. Maier
<mark>Journal publication date</mark>1994
<mark>Journal</mark>Nuclear Physics, Section A
Issue number3
Number of pages15
Pages (from-to)560-574
Publication StatusPublished
<mark>Original language</mark>English


Lifetimes of states in the superdeformed band in 192Hg have been measured using the Doppler-shift attenuation and the recoil-distance methods for the high-spin and the low-spin regions, respectively. Line shapes and decay curves were obtained from high-fold γ-ray coincidence spectra measured with the EUROGAM array. The transition quadrupole moments, derived from the lifetimes, are constant with an average value of Qt = 18.6 b down to the bottom of the band where it decays to the normal states. This suggests that the superdeformed potential-energy minimum is still present at that point and that the decay proceeds by tunneling.