Original title: Measuring of Mean Plasma Electrical Conductivity in Anode Area of Plasma Torches with an External Anode
Authors: Ondáč, Peter ; Mašláni, Alan ; Hrabovský, Milan
Document type: Papers
Conference/Event: WDS´2017 - 26th Annual Student Conference Week of Doctoral Students 2017 /26./, Prague (CZ), 20170606
Year: 2017
Language: eng
Abstract: We developed a non-intrusive direct procedure of measuring an average electrical conductivity of a plasma volume in hot anode areas of those plasma torches. For our measurements, we used a high-speed camera, a high-voltage probe, and a hybrid water–argon plasma torch. The measurements were made for various values of ambient pressure, arc electric current, and argon flow rate. The measured plasma conductivity is in agreement with a model, camera observations and indirectly also with spectroscopy measurements. The procedure provides missing experimental data on the average plasma electrical conductivity and estimates average plasma temperature in the anode areas. The procedure can be theoretically used in every plasma torch where the anode arc attachment movement can be observed during a restrike process\n
Keywords: Anode area; DC arc plasma torch; Plasma electrical conductivity
Project no.: GA15-19444S (CEP), GC17-10246J (CEP)
Funding provider: GA ČR, GA ČR
Host item entry: Proceedings of the 26th Annual Student Conference Week of Doctoral Students 2017 - WDS 2017, ISBN 978-80-7378-356-3
Note: Související webová stránka: http://www.mff.cuni.cz/veda/konference/wds/proc/proc-contents.php?year=2017

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0281709

Permalink: http://www.nusl.cz/ntk/nusl-371594


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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers