Quadrupole moment of the yrast superdeformed band in 192Pb

Anna N. Wilson*, G. D. Dracoulis, P. M. Davidson, A. P. Byrne, R. M. Clark, P. Fallon, A. Görgen, G. J. Lane, A. O. Macchiavelli, D. Ward

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    The lifetimes of states with spins 26ℏ ≥ I ≥ 18ℏ in the yrast superdeformed band of 192Pb have been measured using the Doppler shift attenuation method. The results are consistent with a constant quadrupole moment (Q0) = 19.6-0.4 +0.5 (stat) ± 2.0 (sys) eb. This result is comparable with the values obtained for SD bands in Pb isotopes with N ≥ 112, but could also be consistent with the smaller quadrupole moment measured in 193Pb. Reasons for the apparently lower deformation of SD 193Pb (compared to its heavier neighbours) are considered in the light of total Routhian surface calculations, and the question of whether a similarly reduced deformation should be expected in 192Pb is addressed.

    Original languageEnglish
    Pages (from-to)12-26
    Number of pages15
    JournalNuclear Physics A
    Issue number1-2
    Publication statusPublished - 7 Feb 2005


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