NDLI: Shorter pulse rising time of pulse DC voltage makes atmospheric pressure non-equilibrium plasma more reactive

Content Provider	IEEE Xplore Digital Library
Author	Wu, S. Xu, H. Lu, X. Pan, Y.
Copyright Year	2013
Description	Author affiliation: State key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China (Wu, S.; Xu, H.; Lu, X.; Pan, Y.)
Abstract	Summary form only given. Recently, several groups worldwide have proposed that the APNP driven by short pulses have several advantages over the traditional discharge driven by kHz voltages, including higher energy efficiency for ozone synthesis and UV power output, relative easier to generate diffuse plasma, better power transfer efficiency to the plasma and so $on^{[1-2]}.$ It is generally assumed that short pulses have a short rising time $t_{rise}$ and this short rising time may result in the overvoltage breakdown. The overvoltage breakdown could further enhance the ionization and excitation processes because more high energy electrons may be generated under such conditions. But until now, no quantitative investigation has been reported on how the $t_{rise}$ will affect the plasma characteristics. In this paper, the effect of pulse rising time variable from 4 μs to 100 ns on plasma characteristics is investigated. The experimental results show that, when the trise is reduced from 4 μs to 140 ns, the length of the plasma plume increases from less than 20 mm to about 70 mm, the peak value of the discharge current increases from about 0.2 A to 1.3 A. The corresponding breakdown voltage increase from less than 4 kV to about 6 kV and the electron temperature increase from 1.25 eV to 1.55 eV. These results confirm that the shorter the pulse rising time is, the more reactive the plasma is.
Starting Page	1
Ending Page	1
File Size	152415
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6633231
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasmas Discharges (electric) Voltage control Laboratories Electromagnetics Educational institutions
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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