Publication details

Hypergravity effects on glide arc plasma

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Authors

ŠPERKA Jiří SOUČEK Pavel VAN LOON Jack J.W.A. DOWSON Alan SCHWARZ Christian KRAUSE Jutta KROESEN Gerrit KUDRLE Vít

Year of publication 2013
Type Article in Periodical
Magazine / Source The European Physical Journal D
MU Faculty or unit

Faculty of Science

Citation
Web https://link.springer.com/article/10.1140/epjd/e2013-40408-7
Doi http://dx.doi.org/10.1140/epjd/e2013-40408-7
Field Plasma physics
Keywords glide arc; hypergravity
Attached files
Description The behaviour of a special type of electric discharge – the gliding arc plasma – has been investigated in hypergravity (1g –18g) using the Large Diameter Centrifuge (LDC) at ESA/ESTEC. The discharge voltage and current together with the videosignal from a fast camera have been recorded during the experiment. The gliding of the arc is governed by hot gas buoyancy and by consequence, gravity. Increasing the centrifugal acceleration makes the glide arc movement substantially faster. Whereas at 1g the discharge was stationary, at 6g it glided with 7 Hz frequency and at 18g the gliding frequency was 11 Hz. We describe a simple model for the glide arc movement assuming low gas flow velocities, which is compared to our experimental results.
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