Volume-surface barrier discharge in dried air in three-electrode system fed by impulse high voltage with nanosecond rise time

摘要

Results of experimental investigation of a volume-surface barrier discharge in a three-electrode system under periodic impulse voltage applied to the surface discharge (SD) electrodes and a d. c. potential applied to an additional third electrode are presented. It is shown that there is a strong influence of polarity and amplitude of the d. c. potential on the direct current "extracted" out of the surface discharge plasma layer by electric field of the third electrode. The amount of charged positive species that constitute the "extracted" current prevails under positive impulse voltage for low values of the negative d. c. potential of the third electrode. The amount of negative species prevails with higher values of the positive d. c. positive of the third electrode.