Open AccessEffects of Collisional Zonal Flow Damping on Turbulent Transport
Author(s) -
P. H. Diamond,
T.S. Hahm,
Wen Tang,
W.W. Lee,
Zhaowu Lin
Publication year - 1999
Language(s) - English
Resource type - Reports
DOI - 10.2172/13839
Subject(s) - microturbulence , turbulence , zonal flow (plasma) , physics , coulomb collision , ion , plasma , toroid , collision frequency , mechanics , particle (ecology) , atomic physics , flow (mathematics) , coulomb , tokamak , nuclear physics , geology , quantum mechanics , oceanography , electron
Results from 3D global gyrokinetic particle simulations of ion temperature gradient driven microturbulence in a toroidal plasma show that the ion thermal transport level in the interior region exhibits significant dependence on the ion-ion collision frequency even in regimes where the instabilities are collisionless. This is identified as arising from the Coulomb collisional damping of turbulence-generated zonal flows