Effects of Collisional Zonal Flow Damping on Turbulent Transport

Journal Article · Mon Nov 01 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.3645· OSTI ID:688044

Lin, Z; Hahm, T S; Lee, W W; Tang, W M ^[1]; Diamond, P H ^[2]

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1. Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)
2. Department of Physics, University of California at San Diego, La Jolla, California 92093 (United States)

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. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 688044
• Journal Information: Physical Review Letters, Vol. 83, Issue 18; Other Information: PBD: Nov 1999
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
PLASMA SIMULATION
TURBULENCE
TRANSPORT THEORY
ION-ION COLLISIONS
COLLISIONAL PLASMA
ION TEMPERATURE
TOKAMAK DEVICES