94 research outputs found
Nonlinear Landau damping in the ionosphere
A model is presented to explain the non-resonant waves which give rise to the diffuse resonance observed near 3/2 f sub H by the Alouette and ISIS topside sounders, where f sub H is the ambient electron cyclotron frequency. In a strictly linear analysis, these instability driven waves will decay due to Landau damping on a time scale much shorter than the observed time duration of the diffuse resonance. Calculations of the nonlinear wave particle coupling coefficients, however, indicate that the diffuse resonance wave can be maintained by the nonlinear Landau damping of the sounder stimulated 2f sub H wave. The time duration of the diffuse resonance is determined by the transit time of the instability generated and nonlinearly maintained diffuse resonance wave from the remote short lived hot region back to the antenna. The model is consistent with the Alouette/ISIS observations, and clearly demonstrates the existence of nonlinear wave-particle interactions in the ionosphere
Controlled Experiment on Transport and Structures in Plasmas Associated with Vortex Dynamics and Turbulence
Theoretical and Experimental Studies on the Contribution of Wave-Particle Interactions to Radial Transport in a Strongly Magnetized Non-neutral Plasma
Suppression of secondary electrons from an endplate of a tandem mirror by use of a biased mesh
Physical Mechanism of Self-organization of Novel Density Distribution in a Pure Electron Plasma Driven by Rotating Wave Field
Strong Effects of Low Level Background Vorticity Distribution on the Formation of Ordered Arrays of Clump Vortices in Non-neutral Electron Plasma
Study of Interaction between Plasma and EM Wave in Prospect of Application of Millimeter & Sub-millimeter Waves
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