Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics
NPG
Articles | Volume 10, issue 4/5
Articles | Volume 10, issue 4/5
https://doi.org/10.5194/npg-10-345-2003
© Author(s) 2003. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Special issue:
https://doi.org/10.5194/npg-10-345-2003
© Author(s) 2003. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Articles | Volume 10, issue 4/5
31 Oct 2003
 | 31 Oct 2003

Excitation of waves at 2 ωp,e and back propagating waves at ωp,e: a parametric study

P. Trávnίček, P. Hellinger, D. Schriver, and M. G. G. T Taylor

Abstract. We present a parametric study of electrostatic waves generated with angular frequencies 2 wp,e and - wp,e by an electron beam using a one-dimensional Vlasov code. We consider a background plasma consisting of three components: two electron populations (a background and a beam) and a proton population (with a mass ratio mp /me = 400 and temperatures Tp = Te = T ). We investigate the influence of different beam parameters on the nonlinear growth rate of waves with angular frequency 2wp,e and compare the results of the numerical experiments to theoretical predictions. We also examine the presence and excitation of back propagating waves with angular frequency wp,e. A discussion on the possible generating mechanisms of the different modes observed in these simulations is also presented.

How to cite. Trávnίček, P., Hellinger, P., Schriver, D., and Taylor, M. G. G. T.: Excitation of waves at 2 ωp,e and back propagating waves at ωp,e: a parametric study, Nonlin. Processes Geophys., 10, 345–349, https://doi.org/10.5194/npg-10-345-2003, 2003.