Long-time discrete particle effects versus kinetic theory in the self-consistent single-wave model
Plasma Physics
2009-11-07 v1 Statistical Mechanics
Chaotic Dynamics
Computational Physics
Abstract
The influence of the finite number N of particles coupled to a monochromatic wave in a collisionless plasma is investigated. For growth as well as damping of the wave, discrete particle numerical simulations show an N-dependent long time behavior resulting from the dynamics of individual particles. This behavior differs from the one due to the numerical errors incurred by Vlasov approaches. Trapping oscillations are crucial to long time dynamics, as the wave oscillations are controlled by the particle distribution inhomogeneities and the pulsating separatrix crossings drive the relaxation towards thermal equilibrium.
Cite
@article{arxiv.physics/0105045,
title = {Long-time discrete particle effects versus kinetic theory in the self-consistent single-wave model},
author = {M-C. Firpo and F. Doveil and Y. Elskens and P. Bertrand and M. Poleni and D. Guyomarc'h},
journal= {arXiv preprint arXiv:physics/0105045},
year = {2009}
}
Comments
11 pages incl. 13 figs. Phys. Rev. E, in press