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空气介质阻挡放电单个微放电通道发光强度及振动激发温度的空间分布
Spatial distributions of the intensity of luminescence and the vibrational temperature of single micro-discharge channel in air dielectric barrier discharge
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摘要: 通过清洗放电方法,在平行平板介质阻挡空气放电中得到了单个稳定的微放电通道(又称放电丝).测量了从瞬时阳极到瞬时阴极单个放电丝的发光强度及振动激发温度的空间分布.研究表明:在外加电压的每半周中放电丝发光呈现杯型分布,杯底位于瞬时阴极处;振动温度在两平行板间隙的中心处最高而在瞬时阳极处最低.Abstract: A stable micro-discharge channel(filament)in air discharge is obtained by discharge cleaning method in a dielectric barrier discharge system with two water electrodes. The distributions of intensity of luminescence and the vibrational temperature of a single micro-discharge filament are measured from instantaneous anode to instantaneous cathode. It is found that the emission intensity of discharge filament presents a distribution like a goblet with base locating at instantaneous cathode in each half period of the applied voltage. The vibrational temperature reaches the maximum at the middle of gap of the two parallel electrodes and is the minimum at the instantaneous anode.
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