MIDIT OFD CATS Modelling, Nonlinear Dynamics Optics and Fluid Dynamics Chaos and Turbulence Studies and Irreversible Thermodynamics Risø National Laboratory Niels Bohr Institute and Technical University of Denmark Building 128 Department of Chemistry Building 321 P.O. Box 49 University of Copenhagen DK-2800 Lyngby DK-4000 Roskilde DK-2100 Copenhagen Ø Denmark Denmark Denmark
by Igor Ivonin, Vladimir Pavlenko and Hans Persson
Department of Space and Plasma Physics,
Uppsala University, Sweden
Tuesday March 21, 2000, 13.00 h
at OFD-Meeting Room, Bld. 130,
Risø National Laboratory, Roskilde
Abstract:
We will discuss the reasons and the consequences of the Turbulent
EquiPartition (TEP) establishments of the magnetized electrons in a
tokamak. The global TEP state can be considered as an attractor of
distributions of the turbulent plasma in tokamak, because TEP distribution
has unique property -- uniform in space distribution of the particle
invariants.
In particular, we will discuss in the kinetic description:
1) different radial profiles of the density in the TEP state for
different kinds of the electrons (passing and trapped),
2) the temperature profiles for Ohmic heating regime,
3) generation of the turbulence due to TEP relaxation (due to collisions,
instabilities), the rates of the turbulent mixing and the confinement time,
4) creation of the radial electric field, plasma rotation for different
regimes (L-, H- modes)
Any special knowledge is not assumed.