Frequency conversion, "superluminal" propagation, and compression of a powerful microwave pulse in propagating ionization front.
Phys Rev E
; 107(4-2): 045203, 2023 Apr.
Article
em En
| MEDLINE
| ID: mdl-37198856
ABSTRACT
Frequency up-conversion (â¼10%) and compression (almost twofold) of a powerful (≤250 MW) microwave pulse in the propagating ionization front produced by the pulse itself in a gas-filled waveguide, is investigated experimentally and analyzed theoretically. Pulse envelope reshaping and group velocity increase manifest themselves in a propagation of the pulse faster than in the empty waveguide. A simple one-dimensional mathematical model allows the adequate interpretation of the experimental results.
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MEDLINE
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En
Ano de publicação:
2023
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Article