NDLI: Excimer emission from microhollow cathode discharges

Content Provider	IEEE Xplore Digital Library
Author	El-Habachi, A. Moselhy, M. Stark, R.H. Schoenbach, K.H.
Copyright Year	2000
Description	Author affiliation: Phys. Electron. Res. Inst., Old Dominion Univ., Norfolk, VA, USA (El-Habachi, A.)
Abstract	Summary form only given. Microhollow cathode discharges (MHCDs) combine the possibility for direct current, high-pressure operation with non-equilibrium plasma conditions necessary for efficient excimer formation. When operated in rare gases (Xe, Ar, Ne) or rare gas halides (ArF, XeCl) these discharges were found to be intense sources of excimer radiation. Conversion efficiencies (from input electrical power to output optical power) of several percent were achieved. Although modeling results predict a monotonous increase of radiant power with pressure, in MHCDs it has a maximum at 400 Torr. The observed maximum of the radiant power at constant current was found to be due to the nonlinear reduction of the excimer source area with increasing pressure. The excimer source is located in the cathode opening only at high pressures and low currents. Otherwise, the source extends over the cathode surface outside of the hole. The emitting area decreases by a factor of four over the pressure range from 200 Torr to 760 Torr, whereas the radiant emittance increases monotonically with pressure up to 10 W/cm/sup 2/ at atmospheric pressure. For DC operation, the current was limited to 8 mA to avoid thermal damage.
File Size	72019
File Format	PDF
ISBN	0780359828
ISSN	07309244
DOI	10.1109/PLASMA.2000.855103
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cathodes Fault location Plasma sources Gases Argon Predictive models Space vector pulse width modulation Atmospheric measurements Power measurement Light sources
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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