On the Nature of Picosecond Runaway Electron Beams in Air

On the Nature of Picosecond Runaway Electron Beams in Air

Results of experiments on the generation of picosecond runaway electron (RE) beams in air gaps with a strongly nonuniform electric field distribution are discussed. The mechanism and conditions for the field emission initiation of beams of this type and possible reasons for the limitation of the bea...

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Veröffentlicht in:IEEE transactions on plasma science 2009-06, Vol.37 (6), p.785-789
Hauptverfasser: Mesyats, G.A., Yalandin, M.I.
Format: Artikel
Sprache:eng
Schlagworte:
Air gaps
Beams (radiation)
Cathodes
Critical field
Diodes
Discharges
Electric fields
Electron beams
Electrons
Estimates
explosive emission
Explosives
Field emission
field emission (FE)
Geometry
Ion beams
Ionization
ionization wave
Ionization waves
Nonuniform
Nonuniform electric fields
nonuniform field
picosecond duration
runaway electrons (REs)
screening
Voltage
Wave propagation
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Zusammenfassung:Results of experiments on the generation of picosecond runaway electron (RE) beams in air gaps with a strongly nonuniform electric field distribution are discussed. The mechanism and conditions for the field emission initiation of beams of this type and possible reasons for the limitation of the beam duration are considered. REs are supposed to be the dominant factor in the development of an ionization wave in the gap. Estimates of the mean velocity of propagation of the ionization wave are given.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2009.2012428