$^{196}$Pt and the O(6) Symmetry

ORAL

Abstract

$^{196}$Pt is widely recognized as the textbook example of the O(6) symmetry of the Interacting Boson Model (IBM). Surprisingly, some of the unique IBM predictions for the O(6) limit have yet to be fully demonstrated in this nucleus. To rigorously test these predictions, a Coulomb excitation experiment was performed at the ATLAS facility at Argonne. Using a $^{196}$Pt beam at 850 MeV incident on a Carbon target, numerous low-spin, non-yrast states were populated. $\gamma$ rays were detected using Gammasphere operated in singles mode. From the measured intensities, the Gosia program was used to extract E2 matrix elements between states associated with the O(6) structure. Results will be discussed in terms of how closely the O(6) symmetry is followed in $^{196}$Pt.

*Supported by the DOE Office of Nuclear Physics under Contract Nos DE-AC02-06CH11357 and DE-AC02-98CH10946, the National Science Foundation, and the Air Force Office of Scientific Research.

Authors

  • E.A. McCutchan

    • NNDC
    • BNL,ANL
  • C.J. Lister

    • ANL
  • M.P. Carpenter

    • ANL
  • G. Gurdal

    • ANL
  • G. Hennig

    • ANL
  • R.V.F. Janssens

    • ANL
  • T.L. Khoo

    • ANL
  • T. Lauritsen

    • ANL
  • C. Nair

    • ANL
  • D. Seweryniak

    • ANL
  • S. Zhu

    • ANL
  • G. Rainovski

    • Institut fur Kernphysik, Darmstadt
  • N. Pietralla

    • Institut fur Kernphysik, Darmstadt
  • T. Moeller

    • Institut fur Kernphysik, Darmstadt
  • C. Bauer

    • Institut fur Kernphysik, Darmstadt
  • D. Cline

    • University of Rochester
  • A.B. Hayes

    • University of Rochester