Modulational instability in the beat wave generation

Autor:	N. Silvestre, S. J. Karttunen, G. Laval, Denis Pesme, R. R. E. Salomaa
Jazyk:	angličtina
Rok vydání:	1988
Předmět:	Physics Modulational instability Quantum electrodynamics Beat (acoustics) Physics::Optics Electrical and Electronic Engineering Condensed Matter Physics Atomic and Molecular Physics and Optics
Zdroj:	Pesme, D, Karttunen, S, Salomaa, R, Laval, G & Silvestre, N 1988, ' Modulational instability in the beat wave generation ', Laser and Particle Beams, vol. 6, no. 2, pp. 199-210 . https://doi.org/10.1017/S0263034600003943
ISSN:	1469-803X 0263-0346
DOI:	10.1017/S0263034600003943
Popis:	The coupling of a large amplitude plasmon, generated by the beat-wave process, to ion acoustic waves may lead to modulational or decay instabilities, which are investigated here. A general dispersion relation obtainable from Zakharov equations predicts large growth rates (∼ωpi) for short wavelength modulations. To avoid these, extremely short pulse lengths are required in the beat-wave experiments. Due to the very long wavelength of the beat-plasmon, the decay instability is not likely below the ke V-temperatures.
Databáze:	OpenAIRE
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