Particle diffusion due to stochastic fieldsFunded under: FP1-FUSION 9C
The interaction between a self-consistent pattern of magnetic and associated electric field fluctuations and the particle motion in a plasma is analysed. The effects of this mechanism on the ion motion is assessed with respect to electron motion when the electron Larmor radius is very much less than the scale length of the magnetic fluctuation spectra and that is of the same order as the ion Larmor radius. It is found that the level of magnetic fluctuations in tokamaks deduced from boundary measurements leads to ion diffusion coefficients comparable to those measured, suggesting that this selective diffusion mechanism could be responsible for the confinement properties in tokamaks.
Bibliographic Reference: Report: JET-P(88)67 EN (1988)
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
Record Number: 198910713 / Last updated on: 1994-12-01
Original language: en
Available languages: en