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Glow discharge plasma switch controlled by a small magnetic field

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2 Author(s)
Rocca, J.J. ; Electrical Engineering Department, Colorado State University, Fort Collins, Colorado 80523 ; Floyd, K.

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A cold plasma switch scheme with opening and closing capabilities is reported. An externally applied magnetic field causes a low pressure hollow cathode discharge to transition from a low impedance mode sustained by oscillating beam electrons into a virtually collisionless high impedance mode. The impedance of a 10 A discharge was demonstrated to increase by 20 with the application of a field of 0.018 T.

Published in:

Applied Physics Letters  (Volume:61 ,  Issue: 8 )