Yrast superdeformed band in [Formula Presented]Pb: [Formula Presented] and [Formula Presented]

K. Hauschild, L. A. Bernstein, J. A. Becker, D. E. Archer, R. W. Bauer, D. P. McNabb, J. A. Cizewski, K. Y. Ding, W. Younes, R. Krücken, R. M. Diamond, R. M. Clark, P. Fallon, I. Y. Lee, A. O. Macchiavelli, R. MacLeod, G. J. Schmid, M. A. Deleplanque, F. S. Stephens, W. H. Kelly

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Abstract

The yrast superdeformed band in [Formula Presented]Pb has been populated using the [Formula Presented]Yb[Formula Presented]Mg,5n)[Formula Presented]Pb reaction at [Formula Presented] MeV. Decay [Formula Presented] rays were detected using the GAMMASPHERE array at the 88-Inch Cyclotron. Twelve [Formula Presented]-ray transitions have been observed directly linking three members of the [Formula Presented]Pb yrast superdeformed band to low-lying normal deformed levels. Anisotropy measurements indicate that these linking decays include [Formula Presented]1, [Formula Presented]1, and mixed [Formula Presented] multipolarities. The radiative widths deduced are very inhibited, typically [Formula Presented] Weisskopf units (W.u.) and [Formula Presented] W.u. Without recourse to a priori assumptions [Formula Presented] and [Formula Presented] keV have been unambiguously assigned to the lowest-lying observed superdeformed state (the state populated by the 170-keV intraband transition). The intensity of the observed primaries accounts for 21(2)% of the superdeformed band population.

Original languageEnglish (US)
Pages (from-to)2819-2825
Number of pages7
JournalPhysical Review C - Nuclear Physics
Volume55
Issue number6
DOIs
StatePublished - 1997

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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