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VOLUME 18 (1973) | ISSUE 3 |
PAGE 190
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Contribution to the nonlinear theory of induced scattering of a monochromatic wave in a plasma
Litvak A.G., Petrukhina V.I., Trakhtengerts V. Yu.
The theory of induced scattering of wave packets having a wide frequency spread and a random phase has by now been fairly well developed. Its results, however, cannot be used to explain many laboratory and ionosphere experiments in which a monochromatic wave interacts initially with a plasma. The wave amplitudes are frequently so large that the hydrodynamic stage of induced scattering (also called modified decay instability) develops, wherein γΗ > κνΤα, where γΗ is the increment of the induced scattering, к = t1 t2, tx and t2 are the wave vectors of the incident and scattered waves, respectively, and vra is the thermal velocity of the scattered particles. We present here certain results of an investigation of the nonlinear stage of hydrodynamic scattering of a monochromatic wave.
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