Modulational instability in the beat wave generation

Denis Pesme; Seppo Karttunen; Rainer Salomaa; G. Laval; N. Silvestre

doi:10.1017/S0263034600003943

Modulational instability in the beat wave generation

Denis Pesme, Seppo Karttunen, Rainer Salomaa, G. Laval, N. Silvestre

VTT Technical Research Centre of Finland

Research output: Contribution to journal › Article › Scientific › peer-review

20 Citations (Scopus)

Abstract

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 (∼ω_pi) 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.

Original language	English
Pages (from-to)	199-210
Journal	Laser and Particle Beams
Volume	6
Issue number	2
DOIs	https://doi.org/10.1017/S0263034600003943
Publication status	Published - 1988
MoE publication type	A1 Journal article-refereed

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title = "Modulational instability in the beat wave generation",

abstract = "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.",

author = "Denis Pesme and Seppo Karttunen and Rainer Salomaa and G. Laval and N. Silvestre",

year = "1988",

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T1 - Modulational instability in the beat wave generation

AU - Pesme, Denis

AU - Karttunen, Seppo

AU - Salomaa, Rainer

AU - Laval, G.

AU - Silvestre, N.

PY - 1988

Y1 - 1988

N2 - 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.

AB - 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.

U2 - 10.1017/S0263034600003943

DO - 10.1017/S0263034600003943

M3 - Article

SN - 0263-0346

VL - 6

SP - 199

EP - 210

JO - Laser and Particle Beams

JF - Laser and Particle Beams

IS - 2

ER -

Modulational instability in the beat wave generation

Abstract

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