Email this article Influence of an External AC Electric Field on Plasma Turbulence in the Tokamak Near-Wall Layer
- Authors: Shurygin R.V.1, Melnikov A.V.1,2
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Affiliations:
- National Research Center “Kurchatov Institute,”
- National Research Nuclear University “MEPhI,”
- Issue: Vol 44, No 3 (2018)
- Pages: 303-311
- Section: Tokamaks
- URL: https://journals.rcsi.science/1063-780X/article/view/186705
- DOI: https://doi.org/10.1134/S1063780X18030078
- ID: 186705
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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.
About the authors
R. V. Shurygin
National Research Center “Kurchatov Institute,”
Author for correspondence.
Email: regulxx@rambler.ru
Russian Federation, Moscow, 123098
A. V. Melnikov
National Research Center “Kurchatov Institute,”; National Research Nuclear University “MEPhI,”
Email: regulxx@rambler.ru
Russian Federation, Moscow, 123098; Moscow, 115409
