Parallel-plate electrodes with microholes were used to study microhollow discharges (MHDs) triggered by dielectric barrier discharge (DBD) generated by applying a low-frequency high ac voltage under atmospheric conditions. The results obtained reveal that MHD is ignited simultaneously with spiky DBD signals generated by applying two cycles of time-truncated sinusoidal waves. The discharge ignition voltage of MHD was about 1 kV lower for electrodes with intercavity holes than for electrodes with conventional straight holes. This reduction is due to the triggering effect of self-generated DBD. (C) 2011 American Institute of Physics.
Applied Physics Letters 98 (22), 221502-, 2011-05-31
American Institute of Physics