The Fokker-Planck equation (FPE) is a quite flexible tool for experimental and numerical data analysis. However, advective-diffusive effects may compete with a curvature pinch or the impact of a localized source to determine profiles of transported quantities. Depending on the statistics of interest and/or on the radial extension of the transport process, the same dynamical system may be found diffusive or dominated by its Lévy flights. The Kubo number plays a leading role in determining whether diffusive transport is in the quasilinear regime. It would be advisable to systematically compute it from experimental or numerical data, in order to clarify the issue of its value in magnetic fusion turbulence. © 2008 IOP Publishing Ltd.
All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
- Condensed Matter Physics
Escande, D. F., & Sattin, F. (2008). When can the Fokker-Planck equation describe anomalous or chaotic transport? Intuitive aspects. Plasma Physics and Controlled Fusion, 50(12), -. . https://doi.org/10.1088/0741-3335/50/12/124023