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.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
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
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
Dielectric barrier discharge
Middle value of pd
Electron excitation temperature
Molecule vibrational temperature
