Plasma-based multistage virtual cathode radiation

A plasma-based multistage virtual cathode radiation is proposed. Multistage virtual cathode can be formed as an electron beam passes through a high dense ion background. The reflected electrons can be coupled with transverse magnetic wave, and electromagnetic radiation is detected. Unlike the tradit...

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Bibliographic Details
Published in:Physics of plasmas 2011-12, Vol.18 (12), p.123104-123104-4
Main Authors: Su, Dong, Tang, Changjian
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAM CURRENTS
BEAM-PLASMA SYSTEMS
CATHODES
ELECTRON BEAMS
ELECTRONS
FLUX DENSITY
GHZ RANGE
ION DENSITY
IONS
MICROWAVE RADIATION
PARTICLE ACCELERATORS
PLASMA
PLASMA DENSITY
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Summary:A plasma-based multistage virtual cathode radiation is proposed. Multistage virtual cathode can be formed as an electron beam passes through a high dense ion background. The reflected electrons can be coupled with transverse magnetic wave, and electromagnetic radiation is detected. Unlike the traditional virtual cathode devices, the beam current can be decreased greatly due to the effect of ions, and single mode operation can be achieved by adjusting the beam density. Besides, the radiation frequency, which is proportional to the beam density, covers from 10 to 100GHz. The output power flux density reaches a magnitude of GWm −2 .
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3672059