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Cold-electrode voltage fall for impulse arcs in argon between copper electrodes
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences. (Lightning Research Group)ORCID iD: 0000-0002-3094-4120
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity. (Lightning Research Group)
2011 (English)In: Journal of Physics: Conference Series, ISSN 1742-6596, Vol. 301, 1-5 p., 012042Article in journal (Refereed) Published
Abstract [en]

The full electric arc discharge in gases for short gaps in homogeneous electric field and pressuredistance (pd) below 150 Torrcm, can be described as a transition between different discharge mechanisms such as: Townsend, glow, and arc. Once the arc is achieved the measured voltage drops to some volts and the current density increases several orders of magnitude. Depending upon the type of gas used, the electrode surface characteristics and type of electrical excitation, the cathode and anode voltage fall might change. The present work is directed to study the electrode fall (sum of anode and cathode falls) during a current impulse arc discharge between copper electrodes in ceramic tubes filled with argon between 0.01 and 6.5 Torrcm. The copper electrodes were cleaned, degassed and hydrogen reduced. The arc voltages were measured with fast/slow rise times and short/long duration current impulses produced by a RLC circuit. An increasing variation of the electrode fall was found at the pressuredistance range analyzed.

Place, publisher, year, edition, pages
2011. Vol. 301, 1-5 p., 012042
Keyword [en]
Cold arc discharge, arc electrode fall, high voltage techniques
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Atmospheric Discharges
Identifiers
URN: urn:nbn:se:uu:diva-298435DOI: 10.1088/1742-6596/301/1/012042OAI: oai:DiVA.org:uu-298435DiVA: diva2:946129
Conference
13th International Conference on Electrostatics
Available from: 2016-07-04 Created: 2016-07-04 Last updated: 2016-07-04

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