Three-dimensional instability of two nonlinearly coupled electromagnetic waves in a plasma

Lennart Stenflo, Bengt Eliasson, Mattias Marklund

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The three-dimensional instability of two coupled electromagnetic waves in an unmagnetized plasma is investigated theoretically and numerically. In the regime of two-plasmon decay, where one pump wave frequency is approximately twice the electron plasma frequency, we find that the coupled pump waves give rise to enhanced instability with wavevectors between those of the two beams. In the case of ion parametric decay instability, where the pump wave decays into one Langmuir wave and one ion acoustic wave, the instability regions are added with no distinct amplification. Our investigation can be useful in interpreting laser-plasma as well as ionospheric heating experiments.
LanguageEnglish
Pages371-379
Number of pages9
JournalJournal of Plasma Physics
Volume74
Issue number3
Early online date6 Dec 2007
DOIs
Publication statusPublished - 1 Jun 2008

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electromagnetic radiation
pumps
decay
ionospheric heating
plasma heating
ion acoustic waves
laser heating
plasma frequencies
electron plasma
laser plasmas
ions

Keywords

  • plasma
  • electromagnetic waves

Cite this

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Three-dimensional instability of two nonlinearly coupled electromagnetic waves in a plasma. / Stenflo, Lennart; Eliasson, Bengt; Marklund, Mattias.

In: Journal of Plasma Physics, Vol. 74, No. 3, 01.06.2008, p. 371-379.

Research output: Contribution to journalArticle

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AU - Eliasson, Bengt

AU - Marklund, Mattias

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