Lifetimes of the superdeformed band in 192Hg

Willsau, P. and Korichi, A. and Hannachi, F. and Hubel, H. and Korten, W. and Neffgen, M. and Azaiez, F. and Bourgeois, C. and Duprat, J. and Perrin, N. and Poffé, N. and Sergolle, H. and Bastin, G. and Deloncle, I. and Gall, B. and Kaci, M. and Porquet, M.G. and Schuck, C. and Simpson, J. and Duffait, R. and Le Coz, Y. and Meyer, M. and Redon, N. and De France, G. and Smith, A.G. and Beausang, C.W. and Joyce, M.J. and Paul, E.S. and Sharpey-Schafer, J.F. and Clark, R.M. and Wadsworth, R. and Ahmad, I. and Carpenter, M.P. and Henry, R.G. and Janssens, R.V.F. and Khoo, T.L. and Lauritsen, T. and Hughes, J.R. and Maier, H.J. (1994) Lifetimes of the superdeformed band in 192Hg. Nuclear Physics, Section A, 574 (3). pp. 560-574.

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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.

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Journal Article
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Nuclear Physics, Section A
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01 Apr 2019 11:50
Last Modified:
20 Sep 2023 01:21