Plasma Physics Reports

, Volume 44, Issue 3, pp 303–311 | Cite as

Influence of an External AC Electric Field on Plasma Turbulence in the Tokamak Near-Wall Layer

Tokamaks
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Abstract

Braginskii reduced equations of two-fluid hydrodynamics are modified to take into account the presence of an external ac electric field localized in the tokamak near-wall layer. Numerical simulations show that, after reaching certain amplitude, such a field oscillating with the frequency ω ≈ ωGAM is capable of suppressing turbulent processes. The turbulence suppression mechanism consists in a sharp decrease in the growth rate of drift-resistive ballooning instability due to the appearance of additional nonlinear terms related to the external field in the equation for the vorticity.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.National Research Center “Kurchatov Institute,”MoscowRussia
  2. 2.National Research Nuclear University “MEPhI,”MoscowRussia

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