针-板介质阻挡放电3种放电模式特性

设计了一种具有透明平板电极的针-板介质阻挡放电装置,研究了大气压氩气/空气混合气体放电中不同放电模式的特性.实验通过改变电压,实现了3种模式的放电:电晕放电、单丝放电和火花放电.在3种模式中,电流脉冲在外加电压的正、负半周表现出不同性质.采集了3种放电模式下的发射光谱,计算了分子振动温度,结果表明:电晕放电时分子振动温...

Characteristics of Three Types of Discharge Modes in A Needle-plate Dielectric Barrier Discharge

A needle-plate dielectric barrier discharge device with a transparent plate electrode is designed and used to study on characteristics of different types of discharge modes in atmospheric discharge in argon/air mixture.Three types of discharge modes,which are corona discharge,monofilament discharge,and spark discharge,are realized by changing the applied voltage.The discharge currents in positive half-cycle of the applied voltage are different from that in negative half-cycle.The optical emission spectra are collected in three types of discharges and the molecular vibrational temperatures are calculated.It shows that the vibrational temperature in corona discharge is the highest and that in monofilament discharge is larger than that in spark discharge.