BEHAVIOR OF CONDUCTING PARTICLES IN CORONA-DOMINATED ELECTRIC-FIELDS

The motion of charged particles in electric fields can be harmful to g as-insulated apparatus, or may be used beneficially in several electro static technologies, such as printing, coating and separation of mixed granular solids. The theoretical analysis and the experimental data d emonstrate the existence of numerous factors which determine the behav iour of a single conducting particle in corona-dominated electric fiel ds. Various kinds of particles, spherical and cylindrical in shape, ar e studied. Several high-voltage electrode arrangements (point-plate, c o-axial wire-cylinder) are employed, in order to generate intense coro na discharges. The results ('lift-off' field, amplitude of motion) are compared to the previously studied cases of electric fields without s pace charge.