STATISTICAL MULTIFRAGMENTATION - COMPARISON OF 2 QUITE SUCCESSFUL MODELS

We compare the outcome of the Copenhagen and the Berlin statistical mu ltifragmentation models. The two models both start from the assumption of an ensemble of various excited fragments at thermal and chemical e quilibrium for an expanded nuclear system at a certain stage, the free ze-out configuration. Details as the volume of this source, the intrin sic excitation of the fragments, and the secondary decays are treated quite differently. Also the technical level of the Monte Carlo samplin g differs. Main characteristics such as total charged multiplicity, IM F multiplicity, and total neutron yield are in reasonable agreement. T hus the overall predictions are quite robust against details in the de scription. Deviations are however seen for high energies (E > 6A MeV) where fewer IMF's, fewer neutrons, and much more cu's are seen in the Copenhagen model. The isotopic distribution of the very light fragmen ts is more narrow than in the Berlin model.