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Effect of short‐wavelength Langmuir turbulence on the Brillouin backscattering and filamentation instabilities in homogeneous plasmas
Author(s) -
Spatschek K. H.,
Yu M. Y.,
Shukla P. K.
Publication year - 1976
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19760160603
Subject(s) - filamentation , wavelength , plasma , brillouin zone , turbulence , instability , brillouin scattering , physics , homogeneous , optics , ion , plasma oscillation , langmuir turbulence , atomic physics , laser , mechanics , thermodynamics , quantum mechanics
The Brillouin backscattering and the filamentation instabilities in the presence of short‐wavelength Langmuir turbulence are investigated for a homogeneous plasma. Analytical results for the growth rates and thresholds are obtained. It is shown that the threshold for Brillouin backscattering can be significantly increased because of the anomalous damping of ion‐acoustic perturbations by Langmuir turbulence. For the filamentation instability an enhancement of the growth rate is obtained. The effect of short‐wavelength ion wave turbulence is also discussed.