Abstract
The low-temperature plasma is currently widely used in various technological processes. However, the influence of an external magnetic field on the plasma processes is not studied enough. The low-temperature plasma processes including dissociation of molecular gases, oxidation, and disperse phase formation are researched. The results of experimental investigation of processes associated with carbon oxidation in high-frequency argon- oxygen plasma under external magnetic field (<1 Tesla) are shown. An insertion of carbon atoms to plasma are realized with graphite electrode evaporation. The basic chemical reactions in neutral-radical composition are defined in temperature range 1500–3500 K. The basic products of plasma processes are carbon oxide, carbon dioxide and superdispersed soot. An external magnetic field promotes displacement of plasma chemical reaction rate relations to disperse phase formation. A possibility of isotopic selective plasma processes is shown. An isotopic composition of gaseous reaction products is measured by quadrupole mass-analyzer. The isotopic composition changing tendencies of gaseous and disperse phases (according to carbon isotopes) reaction products versus magnetic field scope are established. The best results are achieved by superposition of magnetic field scope and product reaction quenching area.
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