High-speed imaging of explosive exo-emission from an alumina ceramic in vacuum

B. M. Coaker; N. S. Xu; F. J. Jones; R. V. Latham

doi:10.1117/12.174637

1 May 1994 High-speed imaging of explosive exoemission from an alumina ceramic in vacuum

B. M. Coaker, N. S. Xu, F. J. Jones, R. V. Latham

Proceedings Volume 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum; (1994) https://doi.org/10.1117/12.174637
Event: XVI International Symposium on Discharges and Electrical Insulation in Vacuum, 1994, Moscow-St. Petersburg, Russian Federation

Abstract

A fast-video imaging technique was used to observe the pulsed breakdown behavior of an alumina tube, having two concentric planar electrodes on its end-face. Voltage-pulses, typically of 5 kV amplitude (5 kV microsecond(s) ^-1 time rate-of-rise), were applied to the radial M-I-M insulator-electrode regime under ultra-high vacuum (pressure < 10^-8 Torr), with video recordings made at 1000 frames per second. Images of the observed breakdown phenomena are presented, viewing along the center-axis and also in the plane of the M-I-M structure. These images are discussed in relation to plasma-jets associated with vacuum arcs, and the nature of the ion species within such jets.

Citation Download Citation

B. M. Coaker, N. S. Xu, F. J. Jones, and R. V. Latham "High-speed imaging of explosive exoemission from an alumina ceramic in vacuum", Proc. SPIE 2259, XVI International Symposium on Discharges and Electrical Insulation in Vacuum, (1 May 1994); https://doi.org/10.1117/12.174637

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