Particle-in-cell simulation of generation of an HF sequence of short current pulses in the vircator with counter-propagating beams

We performed a particle-in-cell (PIC) simulation of a vircator with counter electron beams in a cylindrical cavity with metal walls. Two pairs of counter-propagating superlimiting electron beams with different energy and current in each pair are injected along the cylinder axis. It is found that the...

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Bibliographic Details
Published in:Physics of wave phenomena 2017-07, Vol.25 (3), p.238-241
Main Authors: Dubinov, A. E., Saikov, S. K., Tarakanov, V. P.
Format: Article
Language:English
Subjects:
Acoustics
Current pulses
Cylinders
Electromagnetic pulses
Electron beams
Electrons
Generation of Electromagnetic Microwave Radiation
Hafnium
Particle beams
Particle in cell technique
Physics
Physics and Astronomy
Quantum Optics
Ultrawideband
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Summary:We performed a particle-in-cell (PIC) simulation of a vircator with counter electron beams in a cylindrical cavity with metal walls. Two pairs of counter-propagating superlimiting electron beams with different energy and current in each pair are injected along the cylinder axis. It is found that the electron charge in the cavity is formed as a sequence of pulses corresponding to slow accumulation and fast discharge. It is shown that the pulses are related to the characteristic dynamics of the squeezed beam state, the distributed virtual cathode. This regime can be used to generate anHF sequence of ultrawideband electromagnetic pulses.
ISSN:1541-308X
1934-807X
DOI:10.3103/S1541308X17030128