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To better understand the role of residual charges in the repeatability of an atmospheric-pressure He plasma plume, the effects of N2/O2 additives on the minimum pulse repetition frequency $f_{\textrm {min}}$ to sustain the repeatable discharge are investigated for the first time. First, when the percentage of N2 gas in He/N2 mixture increases from 0% to 1.7%, $f_{\textrm {min}}$ increases from...
Atmospheric-pressure room-temperature plasma jets are commonly used in plasma medicine, nanotechnology, as well as surface and materials processing. Most of the applications require room-temperature operation while completely avoiding the glow-to-arc transitions. To meet these requirements, the atmospheric plasma jets are usually sustained in noble gases. However, this is very challenging for the...
Summary form only given. The fundamentals on the propagation of the atmospheric pressure plasma jets are not yet well understood. Teschke et al (2005), Lu et al (2006, 2008), Sands et al (2008), Shi et al (2008), and Ye et al (2008) studied the dynamics of the various plasma jets generated by different devices and sustained by different driving voltages. They all found that the plasma plumes are not...
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