During the last years, numerous experiments dedicated to spallation reactions have been performed and coupled to the development of codes. Among these studies, a lot of efforts have been devoted to the validation of the intra-nuclear cascade (INC) model, INCL4 [1], developed in a collaboration between Saclay and the University of Liège, combined with the evaporation-fission model, Abla [2] from GSI. These models have been implemented into the transport code MCNPX2.5.0 [3], so that we can easily compare them to the other models already included (Bertini [4] and Isabel [5] for INC part, Dresner [6] for the deexcitation step, and also the CEM2k [7] stand alone combination). In this paper, we will study the residue production in a real spallation target, the Megapie target [8] that will be irradiated next July at PSI. The differences between the models predictions for masses and activity rates will be shown and discussed. |
