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Search for forbiddenβ-decays of the drip line nucleus12Be

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Beta-coincidentγ-rays have been measured from implanted pure samples of12Be separated at the LISE3 spectrometer at GANIL. An intensity of 0.040(26) % can be estimated for the branching ratio of the isospin forbidden pure-Fermi transition to the 0+ excited state of12B and of 0.008(6)% of the transition to the 1−1 excited state. Both are taken to represent upper limits. The half-life has been re-measured to be 26.1(2.4) ms.

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Authors and Affiliations

  1. Institut de Physique Nucléaire, IN2P3-CNRS, F-91406, Orsay Cedex, France

    H. Keller, R. Bimbot, S. Dogny, D. Guillemaud-Mueller, A. C. Mueller, F. Pougheon & O. Sorlin

  2. GANIL, BP 5027, F-14021, Caen Cedex, France

    R. Anne, D. Bazin, J. M. Corre, M. Lewitowicz & M. G. Saint-Laurent

  3. Instituto de Estructura de la Materia, CSIC, E-28006, Madrid, Spain

    M. J. G. Borge

  4. Gesellschaft für Schwerionenforschung, D-64291, Darmstadt, Germany

    H. Emling

  5. Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000, Aarhus C, Denmark

    P. G. Hansen, P. Hornshøj & P. Jensen

  6. Institut für Kernphysik, Technische Hochschule, D-64289, Darmstadt, Germany

    F. Humbert & G. Schrieder

  7. Chalmers Tekniska Högskola, Fysiska Institutionen, S-412 96, Göteborg, Sweden

    B. Jonson, T. Nilsson, G. Nyman & K. Wilhelmsen Rolander

  8. Institut für Physik, Universität Mainz, D-55116, Mainz, Germany

    R. Neugart

  9. PPE Division, CERN, CH-1211, Genève 23, Switzerland

    O. Tengblad

Authors
  1. H. Keller
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  2. R. Anne
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  3. D. Bazin
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  4. R. Bimbot
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  5. M. J. G. Borge
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  6. J. M. Corre
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  7. S. Dogny
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  8. H. Emling
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  9. D. Guillemaud-Mueller
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  10. P. G. Hansen
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  11. P. Hornshøj
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  12. F. Humbert
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  13. P. Jensen
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  14. B. Jonson
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  15. M. Lewitowicz
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  16. A. C. Mueller
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  17. R. Neugart
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  18. T. Nilsson
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  19. G. Nyman
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  20. F. Pougheon
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  21. M. G. Saint-Laurent
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  22. G. Schrieder
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  23. O. Sorlin
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  24. O. Tengblad
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  25. K. Wilhelmsen Rolander
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Additional information

On leave of absence from GSI Darmstadt.

Supported by Bundesministerium für Forschung und Technologie under contract nos. 06DA6411 and 06MZ188I.

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Keller, H., Anne, R., Bazin, D. et al. Search for forbiddenβ-decays of the drip line nucleus12Be. Z. Physik A - Hadrons and Nuclei 348, 61–62 (1994). https://doi.org/10.1007/BF01291655

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  • DOI: https://doi.org/10.1007/BF01291655

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