中等pd值介质阻挡放电中等离子体温度研究  

Study on Plasma Temperature in Dielectric Barrier Discharge at the Middle Value of pd

作　　者：董丽芳[1] 齐玉妍[1] 高瑞玲[1] 刘峰[1] 李雪辰[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》2007年第11期2175-2177,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(10375015和10575027);河北省自然科学基金项目(A2004000086;A2006000950)资助

摘　　要：近大气压条件下,在介质阻挡放电系统中得到了氩气和空气混合气体在300～800nm范围内的发射光谱,研究了中等pd值(约6.4×103Pa.cm)氩气和空气混合气体中电子激发温度与分子振动温度。实验选用两条ArⅠ谱线763.51nm(2P6→1S5)与772.42nm(2P2→1S3),用强度对比法测量电子激发温度,利用氮分子第二正带系(C3Πu→B3Πg)计算氮分子振动温度。实验结果表明:电子激发温度和分子振动温度均随电压的增加而增加,并且电子激发温度随电压的变化速率大于分子振动温度的变化速率。The optical emission spectra of Ar/air dielectric barrier discharge （DBD） scanned from 300-800 nm near atmospheric pressure were obtained. Electron excitation temperature （Text） and molecule vibrational temperature （Tv） in Ar/air DBD at the middle value of pressure-distance （pd） product （about 6. 4 × 10^3 Pa ·cm） were studied. The ArI 763.51 nm（2P6→1S5 ） and 772.42 nm（2P2→1S3 ） lines were chosen to estimate Text. Tv was measured by the N2 second positive band （ C^3Πu→B3Πg ）. It was found that Texc and Tv increase with increasing applied voltage. And the varying rate of Texc with increasing voltage is bigger than that of Tv.

关 键 词：介质阻挡放电 中等pd值 电子激发温度 分子振动温度 

分 类 号：O461.2[理学—电子物理学] O433.4[理学—物理]