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Current issue   Ukr. J. Phys. 2017, Vol. 62, N 6, p.495-501
https://doi.org/10.15407/ujpe62.06.0495    Paper

Cherniak O.M., Zasenko V.I.

Bogolyubov Institute for Theoretical Physics, Nat. Acad. of Sci. of Ukraine
(14b, Metrolohichna Str., Kyiv 03680, Ukraine; e-mail: anchernyak@bitp.kiev.ua)

Finite Larmor Radius Effects on a Test-Particle Diffusion

Section: Plasmas and Gases
Original Author's Text: English

Abstract: Particle diffusion in a static random electric field across a uniform magnetic field is considered. Earlier, we have proposed the closure for statistical equation that the describes particle diffusion in the drift approximation with account for the effect of particle trapping. Here, a generalization of our approach for a finite Larmor radius is given. It is shown that the statistical characteristics of a particle ensemble found as solutions of the analytical model are consistent with the results of direct numerical simulations within a wide range of Larmor radii.

Key words:  finite Larmor radius, diffusion of particles, random field, numerical simulation.