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Beta-delayed proton emission from 21Mg

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Abstract

Beta-delayed proton emission from 21Mg has been measured at ISOLDE, CERN, with a detection setup consisting of two charged-particle telescopes surrounding the decay point. Altogether 27 βp branches were measured with center-of-mass energies between 0.4–7.2 MeV. Seven new βp branches were observed. Beta-delayed protons were used to determine the half-life of 21Mg as 118.6 ± 0.5 ms. From a line shape fit of the βp branches we extract the widths, spins, and parities of the resonances of 21Na. An improved interpretation of the decay scheme in accordance with the results obtained in reaction studies is presented.

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Authors and Affiliations

  1. Department of Physics and Astronomy, Aarhus University, DK-8000, Aarhus C, Denmark

    M. V. Lund, H. O. U. Fynbo, J. H. Jensen, K. L. Laursen & K. Riisager

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

    M. J. G. Borge, J. A. Briz, A. Perea, V. Pesudo & O. Tengblad

  3. Department of Nuclear Physics, Lund University, SE-221 00, Lund, Sweden

    J. Cederkäll

  4. Department of Fundamental Physics, Chalmers University of Technology, SE-412 96, Göteborg, Sweden

    B. Jonson & T. Nilsson

  5. ISOLDE, PH Department, CERN, CH-1211, Geneva 23, Switzerland

    M. J. G. Borge

Authors
  1. M. V. Lund
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  2. M. J. G. Borge
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  3. J. A. Briz
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  4. J. Cederkäll
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  13. O. Tengblad
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Corresponding author

Correspondence to M. V. Lund.

Additional information

Communicated by A. Jokinen

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Lund, M.V., Borge, M.J.G., Briz, J.A. et al. Beta-delayed proton emission from 21Mg. Eur. Phys. J. A 51, 113 (2015). https://doi.org/10.1140/epja/i2015-15113-1

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  • DOI: https://doi.org/10.1140/epja/i2015-15113-1

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