Peripheral and central collisions at around 100 MeV per nucleon

We propose a basic distribution model for heavy-ion collisions at energies around 100 MeV per nucleon and beyond, applicable to both the peripheral fragmentation and the central collision processes. The model assumes a basic single-particle distribution out of which the distribution of the other particles can be deduced. It recovers the fragmentation model of Goldhaber and Feshbach in the case of peripheral collisions. It can be applied successfully to analyze the central collisions data of Ar + KCl at 800 MeV per nucleon with an ellipsoidal Gaussian distribution. It leads to the well-known coalescence relation for composite particle production. While systematizing old results, the model is useful in paving a way for new investigations in intermediate energy heavy-ion reactions