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Transition of Streamer, Corona and Glow Discharges in Needle-to-plane Dielectric Barrier Discharge at Atmospheric Pressure Air

查看全文 作　　者：YU [1]Zhe;YANG [1]Haidong;DU [2]Huan;YAO [2]Jing;XU [2]Shaojie;ZHANG [1,2]Zhitao 高影响力作者 机构地区：[1]Institute of Marine Engineering, Dalian Maritime University, Dalian 116026, China;[2]Department of Physics, Dalian Maritime University, Dalian 116026, China高影响力机构 出　　处：《高电压技术》索引2013年第39卷第10期,共7页高影响力期刊 基　　金：supported by National High-tech Research and Development Program of China(863 Program)(2012AA062609);National Twelfth-five Year Science and Technology Supporting Program of China(2013BAC06B02);Special Fund for Marine Scientific Research in the Public Interest(201305027-5);Fundamental Research Fund for the Central Universities(3132013316) 摘　　要：To discuss the modes of dielectric barrier discharge(DBD) between needle-to-plane electrodes in air,DBD is generated and observed on a needle-to-plane device at atmospheric pressure air.Fast images of the DBD are taken by using a charge couple device(CCD) cinema with a macro lens,while the electrical and photo-electricity waveforms of the DBD are recorded.The current waveforms show that under an applied voltage of 3 kV,there are numerous short current pulses in both positive and negative half-periods of discharges.However,under 6 kV,there are still the numerous short current pulses in the positive half-periods,but only one wide current pulse in each negative half-period.This difference is also found in the photoelectric signals.The streamer,corona and glow discharges are observed from the images of the discharges at different applied voltages.The structure of glow discharge in the negative period is exactly the same as that of the low pressure glow discharge.However,in the positive period of discharge there is always a streamer.In the negative period of discharge,while the applied voltage increases,the transition from corona to glow discharge is observed.The progress of a transition between streamer and glow discharge at 6 kV during one period is analyzed.The glow discharge appearance is determined by two factors: the discharge current is limited to a certain extent by the dielectric layer; the charges deposited on the dielectric layer during the last half period enhance the intensity of the electric field.At an insufficient applied voltage,the cathode drop leads to no glow discharge,but Trichel pulses. 关 键 词：介质阻挡放电 辉光放电 平面电极 流光 空气 电晕 电荷耦合器件 电流脉冲
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