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Session BE - Nuclear Structure A>160.
MIXED session, Friday morning, October 04
Dining #1 & #2, Stratton Student Center

[BE.03] Lifetime Measurements in ^180,182Pt Beyond the Backbends.

S.S. Ghugre, U. Garg, B. Kharraja, G. Smith, B. Prause (University of Notre Dame), I. Ahmad, M.P. Carpenter, B. Crowell, R.V.F. Janssens, T.L. Khoo, T. Lauritsen (Argonne Nat. Lab), W. Mueller, W. Reviol, L.L. Riedinger (University of Tennessee), E.F. Moore (North Carolina State University), R. Kaczarowski (SINP, Swierk, Poland), I.M. Govil (Panjab University, India)

The lighter Pt nuclei (^180,182Pt) are expected to exhibit a shape evolution as a function of spin. However, the systematics in the backbending region appear to be the most interesting aspect for these isotopes. In this mass region, the alignment of both the \nu(i_13/2) and the \pi(h_9/2) is theoretically predicted to occur at nearly degenerate frequencies. Hence, lifetime measurements are crucial to elucidate the microscopic structure around and above the backbending region. DSAM measurements have been performed, for the ^180,182Pt nuclei populated via the ^120,122Sn(^64Ni, 4n) ^180,182Pt reactions, using the early implementation GAMMASPHERE. Lifetime results will be presented and their theoretical implications discussed.

Part B of program listing