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Gamma-ray spectroscopy of the doubly magic nucleus 56Ni

  • Nuclear Structure and Reactions
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Abstract.

The doubly magic N = Z nucleus 56Ni has been investigated with two fusion-evaporation reactions; 40Ca(28Si, 3α)56Ni at a beam energy of 122MeV and 28Si(32S, 2p2n)56Ni at 130MeV. To detect γ-rays in coincidence with evaporated particles the Ge-detector array Gammasphere was used in conjunction with the charged-particle detector system, Microball and a 1π neutron detector array. Results include a significantly extended level scheme of 56Ni, which is compared to large-scale shell model calculations in the fp shell. The experimental and theoretical results agree to a large extent, with one notable exception; the theoretical model fails to predict the proper sequence of the yrast and yrare 8+ states.

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Authors and Affiliations

  1. Department of Physics, Lund University, S-22100, Lund, Sweden

    E. K. Johansson, D. Rudolph, J. Ekman, C. Fahlander & C. Andreoiu

  2. School of Chemistry and Physics, Keele University, Keele, UK

    M. A. Bentley & S. J. Williams

  3. Physics Division, Argonne National Laboratory, 60439, Argonne, IL, USA

    M. P. Carpenter, R. V. F. Janssens, F. G. Kondev, T. L. Khoo, T. Lauritsen & D. Seweryniak

  4. Chemistry Department, Washington University, 63130, St. Louis, MO, USA

    R. J. Charity, W. Reviol & D. G. Sarantites

  5. Nuclear Science Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA

    R. M. Clark, P. Fallon, A. O. Macchiavelli & C. E. Svensson

Authors
  1. E. K. Johansson
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  2. D. Rudolph
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  3. J. Ekman
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  4. C. Fahlander
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  5. C. Andreoiu
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  6. M. A. Bentley
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  7. M. P. Carpenter
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  8. R. J. Charity
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  9. R. M. Clark
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  10. P. Fallon
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  11. R. V. F. Janssens
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  12. F. G. Kondev
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  13. T. L. Khoo
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  14. T. Lauritsen
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  15. A. O. Macchiavelli
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  16. W. Reviol
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  17. D. G. Sarantites
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  18. D. Seweryniak
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  19. C. E. Svensson
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  20. S. J. Williams
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Corresponding author

Correspondence to E. K. Johansson.

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R.K. Krücken

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Johansson, E.K., Rudolph, D., Ekman, J. et al. Gamma-ray spectroscopy of the doubly magic nucleus 56Ni. Eur. Phys. J. A 27, 157–165 (2006). https://doi.org/10.1140/epja/i2005-10259-y

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  • DOI: https://doi.org/10.1140/epja/i2005-10259-y

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