Energy Dissipation in Nucleus-Nucleus Collisions around 40 MeV Per Nucleon: New Phenomena or Transition Trends?

  • Marc Lefort
  • Bernard Borderie
  • Dominique Jacquet
  • Nuclear Chemistry Group
Part of the NATO ASI Series book series (NSSB, volume 130)


We have tried to present some of the new aspects which appeared recently in nucleus-nucleus reactions at collision velocities in the range of 0.2 c to 0.3 c. From a set of experimental data obtained at CERN and GANIL by the Orsay Nuclear Chemistry Group, we have tentatively extracted some preliminary conclusions about the possibility of very large energy deposits occuring in more or less central collisions. We have shown that, when nuclear matter is heated at excitation energies greater than 3 to 4 MeV per nucleon, quite a number of new aspects appear in the de-excitation process. Also, for intermediate impact parameters, a new phenomenon, predicted by Bondorf and by Campi et al., might have been observed: “multifragmentation”. We should emphazise that what is presented here results from a collective work and is an attempt to show how physicists try to progress from the raw materials of their experiments towards some more elaborated considerations.


Momentum Transfer Compound Nucleus Fission Fragment Complete Fusion Fission Barrier 


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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Marc Lefort
    • 1
  • Bernard Borderie
    • 1
  • Dominique Jacquet
    • 1
  • Nuclear Chemistry Group
  1. 1.Institut de Physique NucléaireOrsayFrance

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