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Backward runaway electrons in a subnanosecond air discharge at atmospheric pressure

Published online by Cambridge University Press:  13 November 2015

Victor F. Tarasenko ,
Igor' D. Kostyrya  and
Dmitry V. Beloplotov
Victor F. Tarasenko
Affiliation:
Russian Academy of Science, Institute of High Current Electronics, Tomsk 634055, Russia National Research Tomsk State University, Tomsk 634050, Russia
Igor' D. Kostyrya
Affiliation:
Russian Academy of Science, Institute of High Current Electronics, Tomsk 634055, Russia
Dmitry V. Beloplotov*
Affiliation:
Russian Academy of Science, Institute of High Current Electronics, Tomsk 634055, Russia National Research Tomsk State University, Tomsk 634050, Russia
*
Address correspondence and reprint requests to: Dmitry V. Beloplotov, Russian Academy of Science, Institute of High Current Electronics, Akademichesky Ave. 2/3, Tomsk 634055, Russia. E-mail: rff.qep.bdim@gmail.com
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Abstract

In the paper, we study the conditions for the generation of backward runaway electrons through a grounded grid cathode in atmospheric pressure air at high-voltage pulses with a full width at half maximum of 1 ns and risetime of 0.3 ns applied to the gap from a SLEP-150 pulser. The study confirms that backward runaway electrons and X-rays do arise near grid cathodes in atmospheric pressure air. It is shown that the current of the backward beam and the X-rays from the gas diode depend differently on the interelectrode distance. The average X-ray exposure dose in a pulse is more than 3.5 mR.

Keywords

Atmospheric pressure airNanosecond dischargeRunaway electrons beamX-rays
Type
Research Article
Information
Laser and Particle Beams , Volume 34 , Issue 1 , March 2016 , pp. 23 - 30
Copyright
Copyright © Cambridge University Press 2015 

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