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Long-lived high spin states in156Er: Signature for a prolate-to-oblate shape transition

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Lifetimes and feeding times of high spin states in 156 Er have been measured employing the recoil distance method in the reaction 123 Sb(37 Cl,4n) at bombarding energies of 158 and 166 MeV. The yrast states up to spin 20 Ϝ were found to be collective. These levels are fed, however, from long-lived high spin states, causing time delays up to ∼ 100 ps, the existence of which is interpreted as a signature for an oblate shape at high spin.

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References

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Author information

Author notes

  1. R. Kulessa

    Present address: University of Krakow, Poland

Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung, Postfach 110541, D-6100, Darmstadt, Federal Republic of Germany

    F. Azgui, H. Emling, W. Spreng, H. J. Wollersheim & R. Kulessa

  2. Centre de Recherches Nucléaires, F-67037, Strasbourg, France

    T. Byrski, F. A. Beck, G. J. Costa, J. Dudek, B. Haas, C. Gehringer, J. C. Merdinger, R. Seltz & J. P. Vivien

  3. Niels Bohr Institute, DK-2200, Copenhagen, Denmark

    W. Nazarewicz

Authors
  1. F. Azgui
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  2. H. Emling
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  3. W. Spreng
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  4. H. J. Wollersheim
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  5. R. Kulessa
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  6. T. Byrski
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  7. F. A. Beck
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  8. G. J. Costa
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  9. J. Dudek
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  10. B. Haas
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  11. C. Gehringer
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  12. J. C. Merdinger
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  13. R. Seltz
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  14. J. P. Vivien
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  15. W. Nazarewicz
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Azgui, F., Emling, H., Spreng, W. et al. Long-lived high spin states in156Er: Signature for a prolate-to-oblate shape transition. Z Physik A 320, 699–700 (1985). https://doi.org/10.1007/BF01411877

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  • DOI: https://doi.org/10.1007/BF01411877

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