NDLI: Diagnostics of Non-Equilibrium High-Pressure Plasmas Generated by the Resistive Barrier Dtscharge

Content Provider	IEEE Xplore Digital Library
Author	Lu, X. Laroussi, M.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA (Lu, X.; Laroussi, M.)
Abstract	Summary form only given. Atmospheric pressure non-thermal plasmas have recently received increased attention because of several emerging applications. Recently, we presented a novel method to produce a non-thermal, large volume, atmospheric pressure plasma. This method used a similar configuration to the dielectric barrier discharge. However, instead of a dielectric, a resistive layer was used to cover at least one of the electrodes. The resistive barrier discharge (RDB) can be operated with DC or AC power supplies. In this paper, the discharge is operated with a 60 Hz AC power supply. The I-V characteristics of the discharge are studied with He and Ar as operating gases (with air impurity). When He is used as operating gas, the discharge current exhibits several spikes superimposed on an AC part. However, when Ar is used, the discharge is a typical filamentary discharge with current spikes of magnitudes around 10 mA. To identify the various chemical species present in the discharge volume, optical emission spectroscopy (OES) is applied. When He, mixed with air traces, is used the emission spectrum is dominated by excited $N_{2}$ and $N_{2}$ + . On the other hand, when Ar is used, the spectrum is dominated by excited $N_{2}$ and Ar, but no $N_{2}$ $^{+}$ emission bands are observed. The molecules' rotational and vibrational temperatures are of significance in investigations of the discharge. The second positive system of the $N_{2}$ molecule is used to obtain the rotational and vibrational temperatures. It is found that the rotational temperature for a He background is about 300 K, and 500 K for Ar. The vibrational temperatures are about 2100 K and 1100 K for He and Ar, respectively
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	227
Ending Page	227
File Size	826439
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359283
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma diagnostics Argon Helium Atmospheric-pressure plasmas Plasma applications Plasma temperature Dielectrics Power supplies Electrodes Gases
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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