By Topic

Characterization of a pulsed-DC capillary dielectric barrier discharge as a cold plasma source for atmospheric pressure applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Sands, B.L. ; UES Inc., Wright Patterson AFB, OH, USA ; Ganguly, B.N.

We report on the development of an atmospheric pressure plasma jet (APPJ) in a dielectric capillary arrangement using submicrosecond unipolar pulsed-DC excitation as a source for generating a stable, nonequilibrium plasma . This APPJ source differs from other arrangements in that the plasma jet is a self-sustained streamer-like discharge rather than the flow-driven plasma effluent from a discharge within the capillary. We examine the characteristics of this APPJ device in two operating modes. In an open-air configuration, the device runs in a low current streamer discharge mode characterized by a visible plasma jet with a length of ~3.5 cm using a 12 kV voltage pulse and a repetition rate of 1 kHz with an Ar/He flow gas. This APPJ device can be operated with a single powered electrode terminated into a virtual ground plane. With the addition of a physical external cathode, a thin transient discharge filament forms along the capillary axis from which several Amps of current can be drawn. In this closed configuration, the discharge can be described as a spatially confined capillary dielectric barrier discharge of limited duration. We will show results using electrical measurements and spatiotemporally-resolved optical emission and gated ICCD imaging to characterize this APPJ source.

Published in:

Gas Discharges and Their Applications, 2008. GD 2008. 17th International Conference on

Date of Conference:

7-12 Sept. 2008