中等pd值介质阻挡放电中等离子体温度研究

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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300～800 nm范围内的发射光谱，研究了中等pd值(约6.4×10³ Pa·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763.51 nm(2P₆→1S₅)与772.42 nm(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(C ³Π_u→B ³Π_g)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。

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

Abstract：The optical emission spectra of Ar/air dielectric barrier discharge (DBD) scanned from 300-800 nm near atmospheric pressure were obtained. Electron excitation temperature (T_exc) and molecule vibrational temperature (T_v) in Ar/air DBD at the middle value of pressure-distance (pd) product (about 6.4×10³ Pa·cm) were studied. The ArI 763.51 nm(2P₆→1S₅) and 772.42 nm(2P₂→1S₃) lines were chosen to estimate T_exc. T_v was measured by the N₂ second positive band (C ³Π_u→B ³Π_g). It was found that T_exc and T_v increase with increasing applied voltage. And the varying rate of T_exc with increasing voltage is bigger than that of T_v.

Key words：Dielectric barrier discharge;Middle value of pd;Electron excitation temperature;Molecule vibrational temperature

收稿日期: 2006-08-02 修订日期: 2006-10-08

中图分类号:	O461.2
	O433.4

通讯作者: 董丽芳 E-mail: donglf@mail.hbu.edu.cn

引用本文:

董丽芳,齐玉妍,高瑞玲,刘峰,李雪辰. 中等pd值介质阻挡放电中等离子体温度研究[J]. 光谱学与光谱分析, 2007, 27(11): 2175-2177.
DONG Li-fang, QI Yu-yan, GAO Rui-ling, LIU Feng, LI Xue-chen. Study on Plasma Temperature in Dielectric Barrier Discharge at the Middle Value of pd. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(11): 2175-2177.

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