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Room-temperature atmospheric argon plasma jet sustained with submicrosecond high-voltage pulses

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2 Author(s)
Walsh, J.L. ; Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom ; Kong, M.G.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2817965 

In this letter, an experimental study is presented to characterize a room-temperature plasma jet in atmospheric argon generated with submicrosecond voltage pulses at 4 kHz. Distinct from sinusoidally produced argon discharges that are prone to thermal runaway instabilities, the pulsed atmospheric argon plasma jet is stable and cold with an electron density 3.9 times greater than that in a comparable sinusoidal jet. Its optical emission is also much stronger. Electrical measurement suggests that the discharge event is preceded with a prebreakdown phase and its plasma stability is facilitated by the short voltage pulses.

Published in:

Applied Physics Letters  (Volume:91 ,  Issue: 22 )

Date of Publication:

Nov 2007

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