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Non-yrast level structure of121Xe via beta decay of121m+gCs

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

The results of measurements of the gamma-ray and conversion-electron singles and coincidence spectra from the decay of the 122 s121mCs and the 155 s121gCs to levels of121Xe are reported. TheM 3 multipolarity of the 68.5 keV isomeric transition in121Cs has been deduced. Numerous low-lying levels below 1.6 MeV excitation energy are found. A negative-parity level at 355.9 keV is observed for the first time. The results supplement the low lying energy level systematics in odd-A xenons. A comparison is made with theN=67 barium isotone.

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Authors and Affiliations

  1. Institut des Sciences Nucléaires, IN2P3-CNRS/Université Joseph Fourier, F-38026, Grenoble, France

    J. Genevey & A. Gizon

  2. Institut de Physique Nucléaire, Université de Lyon I, IN2P3-CNRS, F-69622, Villeurbanne, France

    G. Marguier

  3. IN2P3-CNRS/CERN, Genève, Suisse

    C. Richard-Serre

  4. Centre de Recherche Nucléaires, IN2P3-CNRS/Université Louis Pasteur, F-67037, Strasbourg, France

    A. Knipper

  5. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, F-91406, Orsay, France

    P. Paris & C. F. Liang

  6. Laboratoire de Radiochimie, F-06034, Nice, France

    B. Weiss

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  1. J. Genevey
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  2. A. Gizon
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  3. G. Marguier
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  4. C. Richard-Serre
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  5. A. Knipper
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  6. P. Paris
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  7. C. F. Liang
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  8. B. Weiss
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The Isolde and Isolde Collaboration

Additional information

The authors are indebted to A. Huck and G. Walter for their interest in this work. They wish to thank M. Morgue for technical assistance.

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Genevey, J., Gizon, A., Marguier, G. et al. Non-yrast level structure of121Xe via beta decay of121m+gCs. Z. Physik A - Hadrons and Nuclei 338, 405–415 (1991). https://doi.org/10.1007/BF01295768

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  • DOI: https://doi.org/10.1007/BF01295768

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