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

  • Tz. KokalovaEmail author
  • W. von Oertzen
  • S. Torilov
  • S. Thummerer
  • M. Milin
  • A. Tumino
  • G. de Angelis
  • E. Farnea
  • A. Gadea
  • D. R. Napoli
  • Th. Kröll
  • N. Marginean
  • T. Martinez
  • M. Axiotis
  • S. M. Lenzi
  • C. Ur
  • P. Papka
  • M. Rousseau
Article

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.

PACS.

21.60.Gx Cluster models 23.90.+w Other topics in radioactive decay and in-beam spectroscopy 25.70.Gh Compound nucleus 25.70.Pq Multifragment emission and correlations 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2004

Authors and Affiliations

  • Tz. Kokalova
    • 1
    • 2
    Email author
  • W. von Oertzen
    • 1
    • 2
  • S. Torilov
    • 1
    • 2
  • S. Thummerer
    • 2
  • M. Milin
    • 1
    • 2
    • 3
  • A. Tumino
    • 2
    • 4
  • G. de Angelis
    • 2
    • 5
  • E. Farnea
    • 6
  • A. Gadea
    • 5
  • D. R. Napoli
    • 5
  • Th. Kröll
    • 5
  • N. Marginean
    • 5
  • T. Martinez
    • 5
  • M. Axiotis
    • 5
  • S. M. Lenzi
    • 6
  • C. Ur
    • 6
  • P. Papka
    • 7
  • M. Rousseau
    • 7
  1. 1.Freie Universität BerlinFachbereich PhysikBerlinGermany
  2. 2.Hahn-Meitner-Institut BerlinBerlinGermany
  3. 3.Rudheight 0.09ex width 0.315emer Bošković InstituteZagrebCroatia
  4. 4.INFN-Laboratori Nazionali del Sud and Università di CataniaCataniaItaly
  5. 5.INFN-Laboratori Nazionali di LegnaroLegnaroItaly
  6. 6.Dipartimento di Fisica and INFNPadovaItaly
  7. 7.Institut de Recherches SubatomiquesIReSStrasbourgFrance

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