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Emission of unbound 8Be and 12C * (0+2) clusters in compound nucleus reactions

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Abstract.

We have studied the emission of light unbound clusters, 8Be and 12C * (0+2), in the reactions 18O + 13C →{31} Si →{23} Ne + 8Be and 28Si + 24Mg →{52} Fe →{40} Ca + 12C * (0+2). The γ-ray spectra obtained in coincidence with 8Be and 12C * (0+2) emission have been studied relative to the statistical emission of two or three α-particles. The angular-momentum-to-energy balance of the cluster emission is compared with that of multiple-α emission. The properties of the energy spectra of the binary process and the population of the residual nuclei by cluster emission are discussed. It is observed that cluster emission carries away less excitation energy on average than the sequential emission of the individual components.

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Authors and Affiliations

  1. Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, D-14195, Berlin, Germany

    Tz. Kokalova, W. von Oertzen, S. Torilov & M. Milin

  2. Hahn-Meitner-Institut Berlin, Glienicker Straße 100, D-14109, Berlin, Germany

    Tz. Kokalova, W. von Oertzen, S. Torilov, S. Thummerer, M. Milin, A. Tumino & G. de Angelis

  3. Rudheight 0.09ex width 0.315emer Bošković Institute, Zagreb, Croatia

    M. Milin

  4. INFN-Laboratori Nazionali del Sud and Università di Catania, Catania, Italy

    A. Tumino

  5. INFN-Laboratori Nazionali di Legnaro, Legnaro, Italy

    G. de Angelis, A. Gadea, D. R. Napoli, Th. Kröll, N. Marginean, T. Martinez & M. Axiotis

  6. Dipartimento di Fisica and INFN, Padova, Italy

    E. Farnea, S. M. Lenzi & C. Ur

  7. Institut de Recherches Subatomiques, IReS, Strasbourg, France

    P. Papka & M. Rousseau

Authors
  1. Tz. Kokalova
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  2. W. von Oertzen
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  3. S. Torilov
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  4. S. Thummerer
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  5. M. Milin
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  6. A. Tumino
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  7. G. de Angelis
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  8. E. Farnea
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  9. A. Gadea
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  10. D. R. Napoli
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  11. Th. Kröll
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  12. N. Marginean
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  13. T. Martinez
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  14. M. Axiotis
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  15. S. M. Lenzi
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  16. C. Ur
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  17. P. Papka
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  18. M. Rousseau
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Corresponding author

Correspondence to Tz. Kokalova.

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J. Äystö

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Kokalova, T., von Oertzen, W., Torilov, S. et al. Emission of unbound 8Be and 12C * (0+2) clusters in compound nucleus reactions. Eur. Phys. J. A 23, 19–31 (2005). https://doi.org/10.1140/epja/i2004-10071-3

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  • DOI: https://doi.org/10.1140/epja/i2004-10071-3

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