Acta Physica Polonica B

Vol. 36, No. 4, April 2005, page 1339

Lifetimes of High-Spin States in 76Kr

J.J. Valiente-Dobon, C.E. Svensson, C.D. O'Leary, I. Ragnarsson, C. Andreoiu, R.A.E. Austin, M.P. Carpenter, D. Dashdorj, P. Finlay, S.J. Freeman, P.E. Garrett, A. Goergen, J. Greene, G.F. Grinyer, B. Hyland, D. Jenkins, F. Johnston-Theasby, P. Joshi, N.S. Kelsall, A.O. Macchiavelli, F. Moore, G. Mukherjee, A.A. Phillips, W. Reviol, D. Sarantites, M.A. Schumaker, D. Seweryniak, M.B. Smith, R. Wadsworth, D. Ward

High-spin states in 7636Kr40 have been populated in the 40Ca(40Ca,4p)76Kr fusion--evaporation reaction at a beam energy of 165 MeV, and studied using the  GAMMASPHERE and MICROBALL multi-detector arrays. The ground-state band and two signature-split negative-parity bands of 76Kr have been extended to \sim 30\hbar. Lifetime measurements using the Doppler-shift attenuation method indicate that the transition quadrupole moment of these three bands decrease as they approach their maximum-spin states.

PACS numbers: 23.20.Lv, 27.50.+e, 21.10.Re, 21.60.Ev


 
Table of Contents Back to Number 4 contents