Observation of nonlinear Landau damping of a broadband spectrum of electron plasma waves
Abstract
Considering the interaction of a spectrum of electron plasma waves with a plasma, in the framework of weak turbulence analysis, a formulation of the nonlinear Landau mechanism is developed, which takes into account finite radial geometrical effects. The formulation of the spectrum evolution and of the deformation of the distribution is given. Experimental results concerning the spectrum and the distribution are compared with this analysis. In particular, the observation of the beat disturbance identifies the mechanism. Moreover, an experimental limit of validity of the weak turbulence analysis is given.
 Publication:

Physics of Fluids
 Pub Date:
 September 1977
 DOI:
 10.1063/1.862047
 Bibcode:
 1977PhFl...20.1488G
 Keywords:

 Collisionless Plasmas;
 Landau Damping;
 Plasma Interactions;
 Plasma Spectra;
 Plasma Waves;
 Argon Plasma;
 Distribution Functions;
 Plasma Cylinders;
 Plasma Turbulence;
 Plasmons;
 Wave Interaction;
 Plasma Physics