Radial propagation of turbulence in tokamaks
Radial propagation of turbulence could explain a non local dependence of the fluctuation spectra and transport coefficients on plasma parameters. It is shown in this work that such a propagation could be due to toroidal coupling or non-linear mode coupling. In the first case, the propagation is characterised by a group velocity whereas both ballistic and diffusive behaviours are possible when non-linearities are involved. A numerical simulation shows that a strong perturbation radially diffuses in non-linear regime.
Bibliographic Reference: Paper presented: 14th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Würzburg (DE), September 30 - October 7, 1992
Availability: Available from (1) as Paper EN 37028 ORA
Record Number: 199211515 / Last updated on: 1994-11-29
Original language: en
Available languages: en