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Title: Kinetic equation for nonlinear resonant wave-particle interaction
Authors: Artemyev, A.V.
Neishtadt, Anatoly
Vasiliev, Alexei
Mourenas, D.
Issue Date: 2016
Publisher: © The Authors. Published by AIP Publishing
Citation: ARTEMYEV, A.V. ...et al., 2016. Kinetic equation for nonlinear resonant wave-particle interaction. Physics of Plasmas, 23, 090701.
Abstract: We investigate nonlinear resonant wave-particle interactions including effects of particle (phase) trapping, detrapping, and scattering by high-amplitude coherent waves. After deriving the relation between probability of trapping and velocity of particle drift induced by nonlinear scattering (phase bunching), we substitute this relation and other characteristic equations of wave-particle interaction into a kinetic equation for the particle distribution function. The final equation has the form of a Fokker-Planck equation with peculiar advection and collision terms. This equation fully describes the evolution of particle momentum distribution due to particle diffusion, nonlinear drift, and fast transport in phase-space via trapping. Solutions of the obtained kinetic equation are compared with results of test particle simulations.
Description: This paper was accepted for publication in the journal Physics of Plasmas and the definitive published version is available at http://dx.doi.org/10.1063/1.4962526
Sponsor: The work of A.V.A., A.A.V., and A.I.N was supported by the Russian Scientific Fund, project 14-12-00824.
Version: Accepted for publication
DOI: 10.1063/1.4962526
URI: https://dspace.lboro.ac.uk/2134/22601
Publisher Link: http://dx.doi.org/10.1063/1.4962526
ISSN: 1089-7674
Appears in Collections:Published Articles (Maths)

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