Nonlinear perpendicular propagation of ordinary mode electromagnetic wave packets in pair plasmas and electron-positron-ion plasmas
- Universiteit Gent, Sterrenkundig Observatorium, Krijgslaan 281, B-9000 Gent (Belgium) and Institut fuer Theoretische Physik, Lehrstuhl IV - Weltraum-und Astrophysik, Ruhr-Universitaet, Bochum, D-44780 Bochum (Germany)
The nonlinear amplitude modulation of electromagnetic waves propagating in pair plasmas, e.g., electron-positron or fullerene pair-ion plasmas, as well as three-component pair plasmas, e.g., electron-positron-ion plasmas or doped (dusty) fullerene pair-ion plasmas, assuming wave propagation in a direction perpendicular to the ambient magnetic field, obeying the ordinary (O-) mode dispersion characteristics. Adopting a multiple scales (reductive perturbation) technique, a nonlinear Schroedinger-type equation is shown to govern the modulated amplitude of the magnetic field (perturbation). The conditions for modulation instability are investigated, in terms of relevant parameters. It is shown that localized envelope modes (envelope solitons) occur, of the bright- (dark-) type envelope solitons, i.e., envelope pulses (holes, respectively), for frequencies below (above) an explicit threshold. Long wavelength waves with frequency near the effective pair plasma frequency are therefore unstable, and may evolve into bright solitons, while higher frequency (shorter wavelength) waves are stable, and may propagate as envelope holes.
- OSTI ID:
- 20974829
- Journal Information:
- Physics of Plasmas, Vol. 14, Issue 2; Other Information: DOI: 10.1063/1.2446373; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Perpendicular propagating electromagnetic envelope solitons in electron-positron-ion plasma
Nonlinear propagation of modulated ion-acoustic plasma waves in the presence of an electron beam