空气介质阻挡放电不同放电模式的光谱特性  

Spectral Characteristics of Different Discharge Modes in Air Dielectric Barrier Discharge

作　　者：董丽芳[1] 李立春[1] 齐玉妍[1] 李雪辰[1] 高瑞玲[1] 范伟丽[1] 

机构地区：[1]河北大学物理科学与技术学院,河北保定071002

出　　处：《光谱学与光谱分析》2008年第4期745-747,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(10575027);教育部高等学校博士学科点专项科研基金项目(20050075001);河北省自然科学基金项目(A2006000950)资助

摘　　要：采用光谱方法,研究了空气介质阻挡放电中流光向类辉光转变时电子能量的变化。利用氮分子第二正带系(C3Πu→B3Πg)的发射谱线,测量了氮分子(C3Πu)的振动温度。通过考察氮分子离子391.4nm谱线强度与氮分子337.1nm谱线强度之比,研究了电子平均能量的变化。结果表明,流光向类辉光转变时,氮分子(C3Πu)的振动温度激增,氮分子离子391.4nm相对谱线强度突增,表明类辉光放电模式中电子能量比流光放电模式中电子能量高很多。实验还发现,气隙间距不同,这两种放电模式转变所对应的转变气压不同,但转变气压与气隙间距的乘积值保持不变。The electron energy in the transition from streamer discharge to glow-like discharge in dielectric barrier discharge in air was investigated by using emission spectra . The vibrational temperature was measured with the N2 second positive band （C3Πu→B3Πg） of the emission spectrum. The average electron energy was investigated from the relative intensity of the nitrogen molecular ion line at 391.4 nm and the nitrogen molecular line at 337. 1 nm. It was found that the vibrational temperature and the relative intensity of nitrogen molecular ion line at 391.4 nm increased abruptly in the transition from streamer discharge to glow-like discharge. It was also found that the pressure for the transition pressure from streamer discharge to glow-like discharge changed with different gap distances, but the product of the transition pressure and gas gap width remained constant.

关 键 词：介质阻挡放电 类辉光放电 流光放电 

分 类 号：O461.2[理学—电子物理学] O433.4[理学—物理]