Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet

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	Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet
	Chang, ZS ; Jiang, N ; Zhang, GJ ; Cao, ZX
刊名	JOURNAL OF APPLIED PHYSICS
	2014
卷号	115 期号:10
ISSN号	0021-8979
通讯作者	Cao, ZX (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Non-equilibrium atmospheric pressure plasma jet (APPJ) is a cold plasma source that promises various innovative applications. The influence of Penning effect on the formation, propagation, and other physical properties of the plasma bullets in APPJ remains a debatable topic. By using a 10 cm wide active electrode and a frequency of applied voltage down to 0.5 Hz, the Penning effect caused by preceding discharges can be excluded. It was found that the Penning effect originating in a preceding discharge helps build a conductive channel in the gas flow and provide seed electrons, thus the discharge can be maintained at a low voltage which in turn leads to a smaller propagation speed for the plasma bullet. Photographs from an intensified charge coupled device reveal that the annular structure of the plasma plume for He is irrelevant to the Penning ionization process arising from preceding discharges. By adding NH3 into Ar to introduce Penning effect, the originally filamentous discharge of Ar can display a rather extensive plasma plume in ambient as He. These results are helpful for the understanding of the behaviors of non-equilibrium APPJs generated under distinct conditions and for the design of plasma jet features, especially the spatial distribution and propagation speed, which are essential for application. (C) 2014 AIP Publishing LLC.
资助信息	Chinese Academy of Sciences; National Natural Science Foundation of China [51307133, 11290161, 51172272, 10904165]; National Basic Research Program of China [2012CB933002]; China National Funds for Distinguished Young Scientists Grant [51125029]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59168]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Chang, ZS,Jiang, N,Zhang, GJ,et al. Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet[J]. JOURNAL OF APPLIED PHYSICS,2014,115(10).
APA	Chang, ZS,Jiang, N,Zhang, GJ,&Cao, ZX.(2014).Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet.JOURNAL OF APPLIED PHYSICS,115(10).
MLA	Chang, ZS,et al."Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet".JOURNAL OF APPLIED PHYSICS 115.10(2014).