Artículo de revista
Electrostatic instabilities induced by large-amplitude left-hand polarized waves
Fecha
2004Registro en:
Journal of Geophysical Research: Space Physics, Volumen 109, Issue A7, 2018,
21699402
10.1029/2004JA010466
Autor
Gomberoff, L.
Hoyos, J.
Brinca, A. L.
Ferrer, R.
Institución
Resumen
We study the effect of a large-amplitude left-hand polarized wave on ion acoustic instabilities. We show that the presence of a finite amplitude left-hand polarized wave produces electrostatic instabilities above a threshold amplitude. These instabilities occur when the phase velocities of the counter-streaming ion acoustic waves become equal, due to the action of the nonlinear wave. They do not exist in the absence of large-amplitude waves. We examine their growth rates and threshold amplitude behavior as a function of the beam speed, temperature, and large-amplitude wave frequency. Copyright 2004 by the American Geophysical Union.