A brief review: experimental investigation of zonal flows and geodesic acoustic modes in fusion plasmas

K J ZHAO (赵开君); J Q DONG (董家齐); J Q LI (李继全); LW YAN (严龙文)

doi:10.1088/2058-6272/aad382

Plasma Science and Technology > 2018 > 20(9): 94006-094006. > DOI: 10.1088/2058-6272/aad382

K J ZHAO (赵开君), J Q DONG (董家齐), J Q LI (李继全), LW YAN (严龙文). A brief review: experimental investigation of zonal flows and geodesic acoustic modes in fusion plasmas[J]. Plasma Science and Technology, 2018, 20(9): 94006-094006. DOI: 10.1088/2058-6272/aad382

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A brief review: experimental investigation of zonal flows and geodesic acoustic modes in fusion plasmas

Southwestern Institution of Physics, Chengdu 610041, People’s Republic of China

Funds: This work is supported by the National Magnetic Confinement Fusion Science Program of China (Nos. 2014GB108004 and 2014GB107000) and National Natural Science Foundation of China (Nos. 11775069 and 11320101005).

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Received Date: March 04, 2018

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Abstract

Abstract

Zonal flows self-generated by turbulence play an important role in regulating turbulence, reducing transport level, and thus improve plasma confinement in fusion plasmas. The zonal flows and geodesic acoustic modes have been identified in various devices. The related issues, such as the poloidal and toroidal symmetries, coupling to turbulence, effects on turbulence and transport, nonlinear energy transfer between turbulence and zonal flows, dependence of the plasma parameters, roles in the confinement regime transitions etc are overviewed briefly in this paper. The interaction between zonal flows and magnetic islands is emphasized.
- zona flow, tokamak, turbulence, fusion plasma

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