ИСТИНА

The talk is a brief overview of the theoretical and experimental status of heavy ion reactions. The emphasis is on non-equilibrium processes in nuclear reactions. The effects due the possible cluster structure of the projectile nucleus, which is excited during the collisions, is discussed. Particular attention is paid to the description of the angular distributions of secondary particles in the framework of the exciton model. As example, the experimental data on the double differential cross section of the secondary particles emitted from the reactions induced by Oxygen are consider. Estimates within the presented models with different clusterization probabilities of clustering in 16O are compared with the experimental data.