Parametric generation of whistler waves due to the interaction of high-frequency wave beams with a magnetoplasma

被引：0
|
作者：
M. E. Gushchin
S. V. Korobkov
A. V. Kostrov
A. V. Strikovskii
机构：
[1] Russian Academy of Sciences,Institute of Applied Physics
来源：
JETP Letters | 2008年 / 88卷
关键词：
52.25.Xz; 52.35.Hr; 52.72.+v;
D O I：
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摘要：
The parametric generation of low-frequency whistler waves by a pump wave beam formed by high-frequency whistler waves with close frequencies is studied experimentally. The electromagnetic fields excited by the beats of two co- or counterpropagating high-frequency waves, or by an amplitude-modulated pump are studied. It is shown that the nonlinear currents at the beat (modulation) frequency are generated by a transverse ponderomotive force arising due to the finite width of the high-frequency beam. In this case, the nonlinear azimuthal drift currents enclose the pump beam and can radiate low-frequency whistler waves to the surrounding plasma.
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页码：720 / 724
页数：4
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