Modulational instability in the beat wave generation

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

Research output: Contribution to journalArticleScientificpeer-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 (∼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.

Original languageEnglish
Pages (from-to)199-210
JournalLaser and Particle Beams
Volume6
Issue number2
DOIs
Publication statusPublished - 1988
MoE publication typeA1 Journal article-refereed

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wave generation
synchronism
Ion acoustic waves
Wavelength
ion acoustic waves
Modulation
decay
wavelengths
modulation
Experiments
pulses
Temperature
temperature

Cite this

Pesme, D., Karttunen, S., Salomaa, R., Laval, G., & Silvestre, N. (1988). Modulational instability in the beat wave generation. Laser and Particle Beams, 6(2), 199-210. https://doi.org/10.1017/S0263034600003943
Pesme, Denis ; Karttunen, Seppo ; Salomaa, Rainer ; Laval, G. ; Silvestre, N. / Modulational instability in the beat wave generation. In: Laser and Particle Beams. 1988 ; Vol. 6, No. 2. pp. 199-210.
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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

Modulational instability in the beat wave generation. / Pesme, Denis; Karttunen, Seppo; Salomaa, Rainer; Laval, G.; Silvestre, N.

In: Laser and Particle Beams, Vol. 6, No. 2, 1988, p. 199-210.

Research output: Contribution to journalArticleScientificpeer-review

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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

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JO - Laser and Particle Beams

JF - Laser and Particle Beams

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Pesme D, Karttunen S, Salomaa R, Laval G, Silvestre N. Modulational instability in the beat wave generation. Laser and Particle Beams. 1988;6(2):199-210. https://doi.org/10.1017/S0263034600003943