ABSTRACT
Hadrons, lightest nuclei, and R-nuclei with the mass close to the mass of a T-nucleus are formed in deep inelastic channels. The isotope yield after evaporation from C-nuclei which avoid fission is directly connected with fissility, since it is determined by the competition between fission and evaporation. The experimental fissility of heavy and medium-weight nuclei for which the height of the fission barrier is known can be described within the framework of the cascade-evaporation model. The study of the fissility of nuclei by intermediate-energy protons allows one to obtain information not only on the dissipation of energy, but also on the properties of highly-excited nuclei. The investigation of multifragmentation of nuclei is a natural development and a complement for the study of nuclear fission in the domain of high energies of incident particles. Fission as a process slow in comparison with the emission of particles can be used as a natural indication of the establishment of statistical equilibrium in R-nuclei.
