1. Lifetimes of the superdeformed band in $^{192}$Hg
- Author
-
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, M.J. Joyce, 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, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Nuclear reaction ,Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Attenuation ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Decay curve ,Spectral line ,Coincidence ,0103 physical sciences ,Quadrupole ,Atomic physics ,010306 general physics ,Quantum tunnelling ,Line (formation) - Abstract
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.
- Published
- 1994