Theoretical approaches to statistical multifragmentation

First a classical and explicit model for multifragmentation of 20Ne projectiles in collisions with heavy nuclei is introduced. All possible many particle correlations can be calculated. Then the theory of statistical multifragmentation at higher energies is presented and compared to Weisskopf's theory of evaporation. The decay of 131Xe at excitation energies up to ≅ 2 GeV is discussed in terms of nuclear thermodynamics. Especially new phase-transitions are found which do not exist in macro systems. (orig.)