Community Research and Development Information Service - CORDIS


A second order linear partial differential equation with a Fokker-Planck (FP) collisional operator is used to describe the behaviour of fast minority ions in tokamaks. Equations are derived for single particle random motion corresponding to a generalised FP equation, which are then tested for the 1D and 2D FP equations. The Gaussian scheme seems to be preferable as it allows a larger time step than the constant step scheme. In the multidimensional case the choice of the coordinate system can help to increase the time step.

Additional information

Authors: PUTVINSKII S, JET Joint Undertaking, Abingdon, Oxon. (GB);TUBBING B, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-R(93)03 EN (1993) 18 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 199311118 / Last updated on: 1994-11-29
Original language: en
Available languages: en