Effects of Collisional Zonal Flow Damping on Turbulent Transport

Z. Lin, T. S. Hahm, W. W. Lee, W. M. Tang, and P. H. Diamond
Phys. Rev. Lett. 83, 3645 – Published 1 November 1999
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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.

  • Received 20 May 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.3645

©1999 American Physical Society

Authors & Affiliations

Z. Lin1, T. S. Hahm1, W. W. Lee1, W. M. Tang1, and P. H. Diamond2

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

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Vol. 83, Iss. 18 — 1 November 1999

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