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Submicrosecond pulsed atmospheric glow discharges sustained without dielectric barriers at kilohertz frequencies

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3 Author(s)
Walsh, J.L. ; Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom ; Shi, J.J. ; 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/+10.1063/1.2361274 

In this letter, the authors report the experimental observation of a large-volume atmospheric glow discharge sustained without dielectric barriers at 1 kHz. This barrier-free mode of operation is made possible with a submicrosecond pulsed excitation instead of the usual sinusoidal excitation. Its current-voltage characteristics are shown to be very different from conventional atmospheric dielectric barrier discharges, and its generation mechanism is studied with nanosecond resolved optical emission spectroscopy. The pulsed barrier-free atmospheric plasma is shown to produce very intense atomic oxygen emission line at 777 nm, up to one magnitude more intensive than that of a comparable atmospheric dielectric barrier discharge.

Published in:

Applied Physics Letters  (Volume:89 ,  Issue: 16 )

Date of Publication:

Oct 2006

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