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中文摘要：
在氩气/空气的混合气体近大气压介质阻挡放电中,首次观察到点状与线状放电共存的放电现象,测量比较了点状与线状放电的谱线频移和振动温度。谱线频移的测量利用的是氩原子ArⅠ（2P2→1S5）的发射谱线,振动温度的测量利用的是氮分子第二正带系（C3Πu→B3Πg）的发射谱线。结果表明：点放电中的ArⅠ（2P2→1S5）谱线的频移大于线放电谱线的频移,表明前者电子密度较高;而点放电振动温度低于线放电的振动温度。
英文摘要：
The emission spectrum line shift and vibrational temperature of dot and line discharges,which coexist in argon/air dielectric barrier discharge,were measured and compared.Emission spectral lines of ArI（2P2→1S5）and the N2 second positive band system（C3Πu→B3Πg） were used to measure the spectrum line shift and the vibrational temperature respectively.It was found that the spectrum line shift of the dot discharge channel is larger than that of the line discharge channel,indicating that the former has high electron density compared to the latter.While the vibrational temperature of the dot discharge channel is lower than that of the line discharge channel.
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