介质阻挡放电中工况对电子激发温度影响的规律

Influence of Operation Conditions on Electronic Excitation Temperature of Dielectric Barrier Discharge

为了研究介质阻挡放电中各种影响因素对电子激发温度的影响规律,建立了介质阻挡放电实验系统;利用建立的实验系统测量了介质阻挡放电的发射光谱,推导出电子激发温度与发射光谱的相互关系公式,进而计算出介质阻挡放电时的电子激发温度;通过改变实验条件测量了不同工况下介质阻挡放电的发射光谱,得出放电中的电子激发温度随驱动电压幅值、气体流量以及氩气含量的变化规律。计算结果表明:介质阻挡放电等离子体中的电子激发温度随驱动电压幅值、氩气体积分数的增大而提高,随气体流量的增加而降低。

In order to study the influence of various factors in dielectric barrier discharge of electronic excitation temperature, we established a dielectric barrier discharge experiment system, and measured the emission spectroscopy of dielectric barrier discharge by analyzing dielectric barrier discharge electron excitation temperature. Using dielectric barrier discharge experimental system, we measured the emission spectra of the air dielectric barrier discharge, deduced the formula of relation between the electronic excitation temperature and emission spectra, and calculated the discharge electronic excitation temperature of approximately 3528K. By measuring the emission spectra of the different operating conditions, we obtained the variation of the electronic excitation temperature with the amplitude of driving voltage, gas flow and argon content. The results show that, the electronic excitation temperature in the discharge plasma increases with the amplitude of driving voltage and the increase of argon gas fraction, but decreases with increasing gn~ flow