FISSION IN SPALLATION REACTIONS

摘要

Some properties of fission in spallation reactions in the GeV range are exam-ined. It is shown on theoretical grounds that the charge, mass and excitationenergy are strongly fluctuating. The range of accessible excitation energies isdetermined. The ability of a particular intranuclear plus evaporation model,namely the INCL4+ABLA model to describe the existing data is demonstrated.In view of the numerous parameters used in the fission model, the sensitivityof the results to these parameters is investigated. It is shown that, due to thecomplexity of the fission modeling, it is hard to get reliable information on thelevel density parameters at high excitation energy. Finally the influence of thenature of the incident projectile is shortly discussed.