Superdeformed multi-quasiparticle high-K states and possible isomers in Pb and Po isotopes

Yue Shi*, F. R. Xu, P. M. Walker, G. D. Dracoulis

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    Configuration-constrained potential-energy-surface calculations have been performed to investigate multi-quasiparticle high-K states built on superdeformed minima in 192,194,196Pb and 198Po. The calculations predict that 196Pb and 198Po would be favorable candidates for the observation of low-lying superdeformed two- and four-quasiparticle high-K states. The possible decay paths and lifetimes that could lead to isomers are evaluated in detail for 196Pb. Comparisons between the predictions and previous observations of octupole-vibrational excitations indicate also that bands built on superdeformed high-K intrinsic states may compete with the octupole-vibrational mode in this mass region. The quadrupole moments of both the collective and intrinsic excitations are analyzed.

    Original languageEnglish
    Article number064304
    JournalPhysical Review C - Nuclear Physics
    Volume85
    Issue number6
    DOIs
    Publication statusPublished - 5 Jun 2012

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