Temporal and spatial structure of a runaway electron beam in air at atmospheric pressure

Temporal and spatial structure of a runaway electron beam in air at atmospheric pressure

The time- and spatial structure of a runaway electron beam generated in air at atmospheric pressure by a high-voltage pulse with a rise time of {approx}300 ps is studied experimentally and numerically. It is obtained that the duration of the runaway electron current is a few tens of picoseconds, and...

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Veröffentlicht in:Journal of applied physics 2013-05, Vol.113 (19), p.196101
Hauptverfasser: Levko, D., Krasik, Ya. E., Tarasenko, V. F., Rybka, D. V., Burachenko, A. G.
Format: Artikel
Sprache:eng
Schlagworte:
AIR
ATMOSPHERIC PRESSURE
BEAMS
CATHODES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
EMISSION
PEAKS
PLASMA PRODUCTION
PLASMA SIMULATION
PULSE RISE TIME
PULSES
RUNAWAY ELECTRONS
SIMULATION
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Zusammenfassung:The time- and spatial structure of a runaway electron beam generated in air at atmospheric pressure by a high-voltage pulse with a rise time of {approx}300 ps is studied experimentally and numerically. It is obtained that the duration of the runaway electron current is a few tens of picoseconds, and it can consist of two or many peaks. It is shown that the many-peak temporal structure of the beam is caused by the non-simultaneous appearance of several emission centers on the cathode edge.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4807403