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Measuring of mean electrical conductivity of a plasma volume in hot anode area of DC arc plasma torches.
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SYSNO ASEP 0479482 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Measuring of mean electrical conductivity of a plasma volume in hot anode area of DC arc plasma torches. Author(s) Ondáč, Peter (UFP-V)
Mašláni, Alan (UFP-V) RID
Hrabovský, Milan (UFP-V) RID
Jeništa, Jiří (UFP-V) RID, ORCID
Sember, Viktor (UFP-V) RIDArticle number O2.306 Source Title EPS 2017: 44th European Physical Society Conference on Plasma Physics, 41F. - Mulhouse : European Physical Society, 2017 / Fajardo M. ; Westerhof E. ; Riconda C. ; Melzer A. ; Bret A. ; Dromey B. - ISBN 979-10-96389-07 Number of pages 4 s. Publication form Online - E Action EPS 2017 Conference on Plasma Physics/44./ Event date 26.06.2017 - 30.06.2017 VEvent location Belfast Country IE - Ireland Event type EUR Language eng - English Country FR - France Keywords Plasma electrical conductivity ; DC arc plasma torch ; High-speed camera Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects GA15-19444S GA ČR - Czech Science Foundation (CSF) GC17-10246J GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 Annotation We focused on measurement of electrical conductivity of the plasma in the anode area of a hybrid plasma torch. We measured plasma effective electrical conductivity in the anode area for various values of electric current, ambient pressure and argon flow rate, and for two configurations of the anode position. Finally, in some case, we compared our measured electrical conductivity data with model electrical conductivity data from computer simulations. We also found the corresponding plasma temperatures and compared them with the plasma temperatures measured spectroscopically. In both cases, there is a good agreement between them. Our results provide missing experimental data on the electrical conductivity of the plasma in the hot anode area, suitable for comparisons with computer simulations. The method can be used also for other plasma torches with an external anode. Moreover, the idea of the method can be further improved in both, theoretical exactness and experimental accuracy
Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2018 Electronic address ocs.ciemat.es/EPS2017PAP/pdf/O2.306.pdf
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