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Author Maskrey, J. T. ♦ Dugdale, R. A. ♦ McVickers, R. C.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ELECTRIC ARCS ♦ ELECTRIC DISCHARGES ♦ HYDROGEN ♦ METALS ♦ MOLYBDENUM ♦ PINCH ♦ PLASMA ♦ REFRACTORY METALS ♦ TANTALUM ♦ TEMPERATURE ♦ TORUS ♦ TUNGSTEN ♦ WIRES
Abstract An investigation was made of the formation of unipolar and power arcs at methallic parts of a system exposed to plasma during experimental investigations of toroidal pinched discharges. Results of previous work indicated the important part played by insulating inclusions in metals in the process of arc initiation. Results are reported from a study of the arching characteristics of refractory metals, exposed to a toroidal discharge in pure hydrogen, as a function of temperature. Wires of commercial purity W, Ta, and Mo were used. The results support the hypothesis that arcs are initiated through the agency of second phases. Mechanisms which induce changes in arching characteristics are discussed. (C.H.)
Educational Use Research
Learning Resource Type Article
Publisher Date 1961-06-10
Publisher Department Atomic Energy Research Establishment, Harwell, Berks, Eng.
Journal Nature
Volume Number 190
Organization Atomic Energy Research Establishment, Harwell, Berks, Eng.


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