Duration of the Runaway Electron Beam at a Subnanosecond Leading Edge of the Voltage Pulse

The conditions have been studied, under which, during a subnanosecond breakdown of centimeter-length gaps filled with air at atmospheric pressure, current pulses of a runaway electron beam (RAEB) of a minimum duration are recorded. It is shown that the duration of the RAEB current pulse depends on m...

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Bibliographic Details
Published in:Technical physics 2022-04, Vol.67 (4), p.267-276
Main Authors: Tarasenko, V. F., Beloplotov, D. V., Sorokin, D. A.
Format: Article
Language:English
Subjects:
Cathodes
Classical and Continuum Physics
Current pulses
Diameters
Electron beams
Electrons
Physics
Physics and Astronomy
Radius of curvature
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Summary:The conditions have been studied, under which, during a subnanosecond breakdown of centimeter-length gaps filled with air at atmospheric pressure, current pulses of a runaway electron beam (RAEB) of a minimum duration are recorded. It is shown that the duration of the RAEB current pulse depends on many parameters, including the shape of the cathode, the length of the interelectrode gap, the diameter of the diaphragm, which is a part of the anode, and the size of the receiving part of the collector. It has been established that with the use of cathodes with an extended edge having a small radius of curvature, with small aperture diameters in the anode, RAEB consisting of two peaks of picosecond duration can be recorded.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784222050115