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Electrode conduction processes in air plasmas

Published online by Cambridge University Press:  28 March 2006

D. W. George  and
H. K. Messerle
D. W. George
Affiliation:
Electrical Engineering School, University of Sydney, Sydney, N.S.W.
H. K. Messerle
Affiliation:
Electrical Engineering School, University of Sydney, Sydney, N.S.W.
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Abstract

Using an electrically driven shock tube with initial pressures of 0.1 to 1.0 mm Hg and shock speeds of about Mach 12 to 15, the resistance of an air plasma between two parallel probes has been measured by two different techniques and the results compared. In one, external voltages of from 0 to 100 V were applied to the probes and in the other, electromagnetically induced voltages of from 0 to 25 V were produced by the plasma's motion in a magnetic field of up to 3500 G. In either case the resistance was found to decrease as the current flow increased and was consistent with the equilibrium electronic conductivity of the air plasma at high current densities.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 13 , Issue 3 , July 1962 , pp. 465 - 477
Copyright
© 1962 Cambridge University Press

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