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The 61/2+ yrast isomer in149Tb

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

An isomeric state (T 1/2=4.0±0.2ns, E *=9.915 MeV,I π=61/2+)has been found in 149 Tb by measuring the half-life of the K internal conversion line of the 184 keV E2 deexciting transition. The breaking of the neutron core is theoretically expected at that spin resulting in sizeable increase of the oblate deformation.

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References

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Authors and Affiliations

  1. C.S.N.S.M. CNRS-IN2P3, F-91405, Orsay, France

    Z. Méliani, J. S. Dionisio, C. Schück & Ch. Vieu

  2. C.R.N. CNRS-IN2P3, F-67037, Strasbourg, France

    G. Duchêne & J. C. Merdinger

  3. Technische Universität München, W-8046, Garching, Federal Republic of Germany

    G. E. Körner

Authors
  1. Z. Méliani
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  2. J. S. Dionisio
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  3. G. Duchêne
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  4. G. E. Körner
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  5. J. C. Merdinger
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  6. C. Schück
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  7. Ch. Vieu
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Additional information

We are greateful to M. Pautrat for her fruitful contribution on the data acquisition system involving thee −-γ spectrometer. We are indebted to T. Døssing for communicating his programms and precious assistance in the theoretical interpretation.

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Méliani, Z., Dionisio, J.S., Duchêne, G. et al. The 61/2+ yrast isomer in149Tb. Z. Physik A - Hadrons and Nuclei 338, 465–466 (1991). https://doi.org/10.1007/BF01295779

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  • DOI: https://doi.org/10.1007/BF01295779

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