Abstract：Single pulse and multi-pulse glow discharges in helium at atmospheric pressure are carried out with dielectric barrier electrodes. By taking fast images of the discharges using an intensified charge couple device, the modes of discharges are investigated. Based on the measured current and the applied voltage, the discharge voltage across the gas gap, discharge current, accumulated charges on dielectric surface and the voltage-current characteristics are calculated. The application of voltage-current characteristics to discharge mode diagnosis is investigated, and physical mechanisms of discharges are discussed. The results show that the applied voltage and accumulated charges on dielectric surface due to discharge result in multiple current pulses, and the increase of applied voltage contributes to discharge, while accumulation of surface charges restrains to discharge. The contribution action of increasing applied voltage plays a master role, the restrain action of the accumulated charges can not surpass the contribution action, and thus the discharge does not extinguish among the pulses. The current-voltage characteristic, which is positive means the discharge is a Townsend discharge and negative means a glow one, can only diagnose the discharge mode of the first pulse. In the case of subsequent pulses, the characteristic can not diagnose the discharge mode.
郝艳捧, 涂恩来, 阳林, 戴栋. 基于气隙伏安特性研究大气压氦气辉光放电的模式和机理[J]. 电工技术学报, 2010, 25(7): 24-30.
Hao Yanpeng, Tu Enlai, Yang Lin, Dai Dong. Mode and Mechanism of Multi-Pulse Glow Discharges in Helium at Atmospheric Pressure Based on Voltage-Current Characteristics. Transactions of China Electrotechnical Society, 2010, 25(7): 24-30.
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2010, Vol. 25 
