Influence of the giant dipole resonance in the statistical decay of the compound nucleus160Er View Full Text


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Article Info

DATE

1986-03

AUTHORS

S. Tobbeche, J. Barrette, B. Haas, F. A. Beck, T. Byrski, G. Duchene, C. Gehringer, J. C. Merdinger, A. Nourreddine, J. P. Vivien

ABSTRACT

Evaporation residue excitation functions and statisticalγ-ray spectra have been measured in the heavy ion fusion reaction16O+144Nd →160Er betweenELab=76 and 105 MeV. In agreement with statistical model calculations, the evolution of theγ-ray spectra as a function of the compound nucleus excitation energy is consistent with the emission of high-energyγ rays (Eγ>10 MeV) in the early stage of the decay process. The description of the evaporation residue distributions by the statistical model is improved if aγ strength function including a giant dipole resonance built on each excited state and describing the shape of the measured statisticalγ-ray spectra is used in the calculations. The present analysis shows, however, that there is a strong correlation between the parameters of the resonance deduced from the fit to theγ-ray spectra and other parameters of the statistical model, in particular the level density parameter. More... »

PAGES

85-93

References to SciGraph publications

  • 1985-09. Competition between few nucleon emission andγ-ray deexcitation for the reaction systems65Cu+87Rb and40Ar+110Pd in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
  • 1984-10. New perspectives on the level density of compound resonances in ZEITSCHRIFT FÜR PHYSIK A HADRONS AND NUCLEI
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    URI

    http://scigraph.springernature.com/pub.10.1007/bf01294247

    DOI

    http://dx.doi.org/10.1007/bf01294247

    DIMENSIONS

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    177 rdf:type schema:Organization
     




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