Electron dynamics and plasma jet formation in a helium atmospheric pressure dielectric barrier discharge jet
Electron dynamics and plasma jet formation in a helium atmospheric pressure dielectric barrier discharge jet
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DOI：
10.1063/1.3628455
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发表时间：
2011-09-19
影响因子：
4
通讯作者：
O'Connell, D.
中科院分区：
文献类型：
--
作者：
Algwari, Q. Th.;O'Connell, D.
研究了在氦气中工作的kHz大气压介质阻挡放电（DBD）射流的主等离子体产生区和等离子体射流的激发动力学。在介质管内，等离子体以流光型放电形式点燃。等离子体射流从通电电极端和接地电极端发射；他们的动态比较和对比。这些喷流的点火方式是完全不同的；从通电电极发射的射流在介质管内被点燃时与等离子体点火有轻微的时间延迟，而在接地电极端的射流击穿是由介质的充电引起的，因此依赖于介质管内等离子体的产生和传输。目前的流光理论可以解释这些动力学。(C) 2011年美国物理研究所。(doi: 10.1063/1.3628455)
The excitation dynamics within the main plasma production region and the plasma jets of a kHz atmospheric pressure dielectric barrier discharge (DBD) jet operated in helium was investigated. Within the dielectric tube, the plasma ignites as a streamer-type discharge. Plasma jets are emitted from both the powered and grounded electrode end; their dynamics are compared and contrasted. Ignition of these jets are quite different; the jet emitted from the powered electrode is ignited with a slight time delay to plasma ignition inside the dielectric tube, while breakdown of the jet at the grounded electrode end is from charging of the dielectric and is therefore dependent on plasma production and transport within the dielectric tube. Present streamer theories can explain these dynamics. (C) 2011 American Institute of Physics. [doi:10.1063/1.3628455]