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Imaging of high-power microwave-induced surface flashover

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6 Author(s)
A. Neuber ; Dept. of Electr. Eng., Texas Tech. Univ., Lubbock, TX, USA ; D. Hemmert ; J. Dickens ; H. Krompholz
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Using two gated intensified digital charge-coupled device cameras, one sensitive in the near infrared to ultraviolet region and one in the soft X-ray region, the temporal development of high-power microwave-induced surface flashover across a vacuum/dielectric interface has been imaged. The emission of X-ray radiation from the interface is caused by field emitted electrons accelerated in the high electromagnetic field impacting the solid. This generation of bremsstrahlung terminates at the moment of full flashover development that is indicated by the optical light emission. A rising plasma density above the dielectric surface due to electron induced outgassing triggers this behavior

Published in:

IEEE Transactions on Plasma Science  (Volume:27 ,  Issue: 1 )