Investigation of Surface Dielectric Barrier Discharge, Created by Parallel Planar Electrodes

The influence of electric field intensity as well as of other physical parameters on the formation of a dielectric barrier discharge is investigated. Formulas for estimation of the geometrical dimensions and the duration of existence of a separate microdischarge in the cells of the dielectric barrier discharge are analyzed. These formulas are studied for model systems of two types: (1) the planar electrode coated with a dielectric, to which the second planar metal electrode is adjoined perpendicularly; (2) the planar electrode with a dielectric coating, perpendicularly to which the second electrode with a cylindrical cross section is adjoined. The barrier discharge is investigated, which arises on the dielectric surface where planar metallic electrodes are arranged in a parallel row. On the opposite side of the dielectric surface, the solid grounded electrode is located. It is shown that there is an optimal geometric configuration of the discharge cell (a width of the metal strip, a width of the gap between the strips-electrodes on the dielectric surface), for which the best energy effectiveness of plasma-chemical processes is achieved. The results obtained can be used for the development of new plasma-chemical reactors for finding optimal regimes of their work with the aim of increasing the desired product yield while reducing simultaneously the power consumption of the facility.

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