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含空气杂质大气压氦气介质阻挡放电中彭宁电离作用

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Keywords: 介质阻挡放电,彭宁电离,放电起始电压,发射光谱

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Abstract:

进行大气压氦气介质阻挡放电,通过测量放电起始电压和发射光谱,研究本底空气压强BAP在0.8~1000Pa时放电中彭宁电离作用的变化规律。结果发现BAP190Pa时,放电起始电压显著线性增大,391.4nm谱线强度随BAP增大而逐渐下降,最终几乎趋于零。He原子的各谱线强度随BAP增大而逐渐递减。探讨其物理过程为放电起始电压的结果和发射光谱的结果均指出彭宁电离作用随BAP改变而变化;He原子各谱线强度变化是由于淬灭造成的。

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