Electron-optical study of the initial phase of subnanosecond pulsed electric breakdown of gas-filled gaps |
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Authors: | S N Ivanov V V Lisenkov V G Shpak |
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Institution: | (1) Area B, Airforce Research Laboratory, 1950 Fifth Street, 45433-7251 Wright Patterson Air Force Base, OH, USA |
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Abstract: | The glow accompanying the breakdown of gas gaps with a strong overvoltage by voltage pulses with 1-ns and shorter fronts is
studied by electron optics methods. The filling of the gap with glow was accompanied by the development of ionization wave
processes originating in the bulk of the gas and controlling the first stage of the breakdown. The dynamics of evolution of
ionization waves in the electrode gap was analyzed in the 1D approximation. The results of calculations are in qualitative
agreement with experiment. This leads to the conclusion that breakdown can be initiated from the bulk of the gas rather than
from the surface of the electrodes. At this stage, the electrodes are mainly required for producing the electric field in
the gap. |
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Keywords: | |
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