Effects of Collisional Zonal Flow Damping on Turbulent Transport
- 1 November 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (18) , 3645-3648
- https://doi.org/10.1103/physrevlett.83.3645
Abstract
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.Keywords
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