Uniform, Filamentary, and Striped Patterns in Helium Dielectric Barrier Discharge Cryoplasmas
Uniform, Filamentary, and Striped Patterns in Helium Dielectric Barrier Discharge Cryoplasmas
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DOI：
10.1109/tps.2011.2158857
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发表时间：
2011-11-01
影响因子：
1.5
通讯作者：
Terashima, Kazuo
中科院分区：
文献类型：
--
作者：
Stauss, Sven;Ebato, Norihito;Terashima, Kazuo
在温度192~7.6K、气压1.2×10(5)~5.2×10(3)Pa的氦气中产生了介质阻挡放电低温等离子体。观察到不同的放电结构，如均匀辉光、丝状和条状图案，其形成取决于中性气体温度、外加电压和频率。在较高温度下，除了He外，光学发射光谱还包括由N-2等杂质引起的谱带，而在20K以下，只观察到由He和He-2引起的峰。
Dielectric barrier discharge cryoplasmas were generated in helium at temperatures between 192 K and 7.6 K at pressures between 1.2 x 10(5) and 5.2 x 10(3) Pa. Different discharge structures were observed, such as uniform glow, filamentary, and striped patterns, whose formation depends on the neutral gas temperature, applied voltage, and frequency. At higher temperatures, in addition to He, optical emission spectra include bands due to impurities such as N-2, while at temperatures below 20 K, only peaks due to He and He-2 are observed.