Nonlinear Interaction Between Circularly Polarized Waves and Electron Plasma Waves

1971 ◽  
Vol 42 (5) ◽  
pp. 1997-2005 ◽  
Author(s):  
H. Kim ◽  
K. J. Harker ◽  
F. W. Crawford
Keyword(s):  
Nonlinear Interaction ◽  
Plasma Waves ◽  
Electron Plasma ◽  
Circularly Polarized ◽  
Polarized Waves

Parametric excitation in an inhomogeneous plasma

1971 ◽  
Vol 5 (1) ◽  
pp. 107-113 ◽  
Author(s):  
C. S. Chen
Keyword(s):  
Electric Field ◽  
Parametric Excitation ◽  
Growth Rates ◽  
Inhomogeneous Plasma ◽  
Electron Plasma ◽  
Transverse Waves ◽  
Circularly Polarized ◽  
Polarized Waves ◽  
Oscillating Electric Field ◽  
Unmagnetized Plasma

An infinite, inhomogeneous electron plasma driven by a spatially uniform oscillating electric field is investigated. The multi-time perturbation method is used to analyze possible parametric excitations of transverse waves and to evaluate their growth rates. It is shown that there exist subharmonic excitations of: (1) a pair of transverse waves in an unmagnetized plasma and (2) a pair of one right and one left circularly polarized wave in a magnetoplasma. Additionally, parametric excitation of two right or two left circularly polarized waves with different frequencies can exist in a magnetoplasma. The subharmonic excitations are impossible whenever the density gradient and the applied electric field are perpendicular. However, parametric excitation is possible with all configurations.

Waves in magnetoplasma with a stochastic magnetic field

1980 ◽  
Vol 23 (2) ◽  
pp. 311-320
Author(s):  
Y. S. Prahalad ◽  
M. L. Mittal
Keyword(s):  
Magnetic Field ◽  
Nonlinear Interaction ◽  
Linear Analysis ◽  
Coupling Coefficients ◽  
Transverse Waves ◽  
Circularly Polarized ◽  
Transverse Modes ◽  
Polarized Waves ◽  
Stochastic Magnetic Field ◽  
The Magnetic Field

In the present analysis, a normal mode approach is used to study waves in a plasma subjected to a spatially uniform but temporally stochastic magnetic field. The first part deals with the evolution of circularly polarized transverse waves. Making a linear analysis, it is shown that the coherent waves are damped. The nature of the damping is determined by the Kubo number. In the second part, the nonlinear interaction of three coherent waves propagating along the magnetic field is analyzed. The coupling coefficients for the interaction of two circularly polarized waves and a longitudinal one are calculated. It is shown that for coherent waves, the system is equivalent to the interaction of two damped transverse modes with an undamped longitudinal one.

Remote Excitation of Electron Plasma Waves by a Modulated Laser Beam

1982 ◽  
Vol 21 (Part 1, No. 2) ◽  
pp. 410-411
Author(s):  
Shunjiro Ikezawa ◽  
Masataka Tsuzuki ◽  
Takashi Aoki ◽  
Shigehiko Nonaka ◽  
Yoshiharu Nakamura
Keyword(s):  
Laser Beam ◽  
Plasma Waves ◽  
Electron Plasma

Anomalous absorption of the circularly polarized electromagnetic beams near the plasma frequency in a magnetized electron plasma

2007 ◽  
Vol 73 (3) ◽  
pp. 315-330 ◽  
Author(s):  
S. R. SESHADRI
Keyword(s):  
Resonant Frequency ◽  
Plasma Frequency ◽  
Unit Length ◽  
Plane Waves ◽  
Electron Plasma ◽  
Magnetostatic Field ◽  
Power Absorption ◽  
Circularly Polarized ◽  
Focused Beams ◽  
Electromagnetic Beams

AbstractThe propagation of circularly polarized electromagnetic beams along the magnetostatic field in an electron plasma is investigated. As a consequence of a strong interaction with the medium, the beam spreads rapidly on propagation near the cutoff frequencies and the cyclotron resonant frequency of the corresponding plane waves, as well as near the plasma frequency. The power absorption for unit length near the cyclotron frequency and the plasma frequency are determined. For tightly focused beams, there is significant power absorption near the plasma frequency as compared with that at the cyclotron resonant frequency.

Sign in / Sign up

Export Citation Format

Share Document