Abstract
Half-lives of 7− and 12+ states in190, 192Pt and 25/2− states in191, 193Pt were measured with the in-beam direct timing method. Time spectra of conversion electrons were recorded relative to the beam bursts of the Bonn cyclotron. The values forB(E2, 12+ → 10+) in190, 192pt are compared with available calculations for pure (vi 2/−213 ) rotation-aligned configurations. The systematics of theB(E2) values within the semi-decoupled negative paraity bands is discussed. An attempt has been made to measure the half-life of the 7− level in188Pt. The still existing inconsistences are briefly discussed.
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On leave from Andhra University, Waltair, India
We would like to thank Drs. H. Backe, P.J. Daly, S.A. Hjorth, and L. Richter for the communication of unpublished data and for helpful discussions. Two of the authors are grateful to the Heinrich-Hertz-Stiftung (E.F.) and the Alexander von Humboldt-Stiftung (T.R.) for research fellowships. The financial support of this work by the Bundesministerium für Forschung und Technologie of the Federal Republic of Germany is gratefully acknowledged.
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Tischler, R., Mertin, D., El Farrash, A.H. et al. Lifetimes of rotation-aligned states in190−193Pt. Z Physik A 288, 67–71 (1978). https://doi.org/10.1007/BF01408203
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DOI: https://doi.org/10.1007/BF01408203