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High-spin states in154Er

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

High-spin states in154Er have been populated by bombarding147Sm and148Sm with12C particles. Excitation functions, lifetimes, angular distributions andγ-γ coincidences were measured. AT 1/2=35ns isomeric state atE x∼3 MeV has been found and is interpreted as a two-quasi-particle state with aligned angular momenta. A cascade of intense individual lines from states with spin up to at least 26 (excitation energy up to 8.543 MeV) was found to feed the isomeric state. The level sequence above this yrast trap exhibits an irregular pattern which cannot be easily interpreted in terms of collective modes.

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Authors and Affiliations

  1. Laboratoire S. Rosenblum du C.S.N.S.M., Orsay, France

    P. Aguer, G. Bastin & J. P. Thibaud

  2. Institut des Sciences Nucléaires, Grenoble, France

    D. Barneoud, J. Boutet & C. Foin

Authors
  1. P. Aguer
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  2. G. Bastin
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  3. J. P. Thibaud
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  4. D. Barneoud
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  5. J. Boutet
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  6. C. Foin
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Additional information

The authors would like to thank Drs. H. Bernas, T. Kachnowski and W.D. Hamilton for valuable comments in reading the manuscript. They are indebted to the Grenoble cyclotron staff and to Mr. G. Margotton for their assistance during the course of these experiments.

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Aguer, P., Bastin, G., Thibaud, J.P. et al. High-spin states in154Er. Z Physik A 285, 59–66 (1978). https://doi.org/10.1007/BF01410225

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  • DOI: https://doi.org/10.1007/BF01410225

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