不同气压下氩气介质阻挡辉光放电的特性研究

利用双水电极介质阻挡放电装置,采用光学方法和电学方法测量了不同气压下氩气介质阻挡辉光放电发光和转移电荷的时间特性.随气压的增加,放电的光信号脉冲数不断增加.介质阻挡辉光放电的起始时刻都发生在外加电压的下降沿,也就是电压的零点以前,即"过零放电".通过Lissajous图形得到了放电功率.气压小于8.08×104Pa时,介质阻挡辉光放电电压和放电功率随气压变化缓慢增加;在气压大于8.08×104Pa时,介质阻挡辉光放电电压和放电功率随气压变化迅速增加.获得了气压对介质阻挡辉光放电电压和放电功率的影响.

Study on Characteristics of Dielectric Barrier Glow Discharge in Argon at Different Pressure

The temporal characteristic of light emission and transported charge of dielectric barrier glow discharge (DBGD) in argon at different pressure is measured with optical and electrical method by using the special setup of two water electrodes. The number of light emission spikes of discharge increases with the gas pressure increasing. In our experiment, the moment of discharge initiation of DBGD occurs at the falling edge of applied voltage (prior to the moment of zero voltage), which corresponds to discharge before zero voltage. Dissipated power of discharge is obtained from Lissajous figures. When the gas pressure is less than 8.08×10~4 Pa, discharge voltage and discharge power of DBGD slow increases with pressure increasing. While the gas pressure is more than 8.08×10~4 Pa, discharge voltage and discharge power of DBGD fast increases with pressure increasing. The influence of pressure on voltage and discharge power of DBGD is gained.