ABSTRACT
The INC-model, which reposes upon a classical microscopic description of a collision between a particle and a nucleus, is widely used. Particles produced in this collision also move along their classical trajectories and can also collide with intranuclear nucleons or with one another, and so on. At the stage of pre-equilibrium emission, collisions of nucleons lead, as a rule, to a redistribution of energy over an ever widening set of degrees of freedom of the nucleus. During the development of the cascade separate collisions of a pair of particles take place in the domain whose dimensions are small, as compared to the mean free path of a particle in nuclear matter. The calculation of the cascade is considerably simplified within the framework of the macroapproximation. The cascade stage is characterized by high-energy nucleons flying mostly forward. Particles produced in this collision can also collide with intranuclear nucleons or with one another. Between collision, particles move along their classical trajectories.
