ABSTRACT
Radiolytic conversions of various substances are generally defined by the radiation .. conditions {phase . state of the medium, ionizing radiation intensity, composition and concentration of solutions, etc.). Therefore, determination of the radiolytic conversion mechanism for the system under study and control of the reactions in it require recording moments of occurrence and conversion of primary products of radiolysis - ions, excited states and radicals, which are highly reactive particles. The simplest case is presented radiolysis of gaseous substances. Under these conditions, the interaction between molecules is minimal. Ions may be registered directly in the gas phase, for example, using the mass-spectrometry method. Spectroscopic methods may help in tracking formation and conversions of intermediate compounds having absorption bands in various ranges of wavelengths. In the condensed phase at direct registration of ions, luminescence and ESR methods may help in tracking formation and conversions of ions and excited states,.and ESRand spectroscopy methods help in tracking radical conversions. Let us briefly discuss physical grounds of these methods of investigation.
