[en] Investigations of a number of phenomena in nuclear interactions at high energies are carried out. The cross section of carbon interaction at 4.2 GeV/c per nucleon in a propane bubble chamber, distribution by effective mass of effect relation to the background for nπ^- systems (n - whole number) and angular dependence of proton yield in central interactions are given. The problems of abnormal β decays of nuclei, shock waves in a nuclear substance and π^- meson multiplicity in nuclear processes, are discussed