Plasma kinetic theory without the Markovian approximation: Numerical results
Abstract
A numerical computation is carried out for the evolution of the amplitude and the frequency shift of a monochromatic electron wave in an unmagnetized plasma by using a recently generalized quasilinear theory. The numerical results show that the theory gives a good representation of trapping phenomena. It is found that trapping originates from retaining fast scale terms, both in the orbits and in the propagation of the perturbed distribution f'. Such terms in the latter represent space and time correlations of the orbits, or, equivalently, the ``memory'' of the average distribution f¯. Both theory and computation were done in the regime f'≪ f¯, or eΦ/T<1. Modecoupling terms are not needed in such a regime.
 Publication:

Physics of Fluids B
 Pub Date:
 March 1989
 DOI:
 10.1063/1.859163
 Bibcode:
 1989PhFlB...1..485P
 Keywords:

 Kinetic Theory;
 Nonlinear Equations;
 Plasma Waves;
 Coupled Modes;
 Numerical Stability;
 Perturbation;
 Plasma Oscillations;
 Trapping;
 Plasma Physics