The Decay Pathways of a Triaxial Strongly Deformed (TSD) Band in $^{168}$Hf

ORAL

Abstract

Following the discovery of the wobbling motion in $^{161-167}$Lu, TSD bands in the mass A $\sim$ 165 region have received considerable attention. Previously, three TSD bands were reported in $^{168}$Hf which is the first evidence for triaxial superdeformation in an even proton system [1]. However, none of the bands was linked to known levels. Consequently, the spin/parity, excitation energy, and intrinsic configurations of the bands remain unknown. Recently, we further analysed the $\gamma$-ray coincidence data obtained from the Gammasphere experiment at ANL using a self-supporting target. The decay pathways of TSD2 band to low-spin normal deformed structures have been established. The spin/parity of the band were determined. The results will be discussed based on cranked shell model calculations. Work supported by U.S. DOE grant DE-FG02-95ER40939. \newline [1] H. Amro et al., Physics Letters B 506 (2001) 39-44.

Authors

  • W.C. Ma

  • H. Amro

  • P.G. Varmette

    • Mississippi State Univ.
  • G.B. Hagemann

  • B. Herskind

  • K.A. Schmidt

  • G. Sletten

    • NBI
  • M. Carpenter

  • R.V.F. Janssens

  • T.L. Khoo

  • T. Lauritsen

  • C.J. Lister

    • ANL
  • A. Bracco

  • S. Frattini

  • B. Million

    • Univ. di Milano
  • J. Domscheit

  • H. H\"ubel

    • Univ. of Bonn
  • D.J. Hartley

  • L.L. Riedinger

    • Univ. of Tennessee
  • S.W. $\O$deg{\aa}rd

  • S. Siem

    • Univ. of Oslo
  • R.B. Yadav