Random transition between two temperatures profiles in magnetized plasma

4th International Workshop & Summer School on Plasma Physics 2010

Pometescu, N.^1 ; Weyssow, B.^2,3

Association EURATOM-MECTS, University of Craiova, Department of Physics, 13 A.I.Cuza Str., 200585 Craiova, Romania^1

Assoc. EURATOM-Etat Belge, Université Libre de Bruxelles, Belgium^2

EFDA-CSU, Garching, Germany^3

关键词: Guiding centers;    Langevin equation;    Magnetized plasmas;    Main magnetic fields;    Radial direction;    Random transition;    Stochastic transitions;    Temperature profiles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/516/1/012020/pdf
DOI  :  10.1088/1742-6596/516/1/012020

来源: IOP

【 摘 要 】

A set of Langevin equations are used to describe the transport of the guiding centers of charged particles perpendicularly to the main magnetic field and the stochastic transition between the two temperature states is described by a randomly interrupted noise. Using this model, the variation of the running diffusion coefficients in the radial direction is analyzed for two cases of temperature profiles with applications to fusion plasma.