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- Title
Parametric generation of whistler waves due to the interaction of high-frequency wave beams with a magnetoplasma.
- Authors
Gushchin, M. E.; Korobkov, S. V.; Kostrov, A. V.; Strikovskii, A. V.
- Abstract
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.
- Subjects
WAVES (Physics); ELECTROMAGNETIC fields; PARTICLE beams; PLASMA gases; PONDEROMOTIVE force
- Publication
JETP Letters, 2009, Vol 88, Issue 11, p720
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364008230045