Effects of plasma turbulence on the nonlinear evolution of magnetic island in tokamak

Minjun J. Choi (), Lāszlo Bardōczi, Jae-Min Kwon, T. S. Hahm, Hyeon K. Park, Jayhyun Kim, Minho Woo, Byoung-Ho Park, Gunsu S. Yun, Eisung Yoon and George McKee
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Minjun J. Choi: Korea Institute of Fusion Energy
Lāszlo Bardōczi: General Atomics
Jae-Min Kwon: Korea Institute of Fusion Energy
T. S. Hahm: Seoul National University
Hyeon K. Park: Ulsan National Institute of Science and Technology
Jayhyun Kim: Korea Institute of Fusion Energy
Minho Woo: Korea Institute of Fusion Energy
Byoung-Ho Park: Korea Institute of Fusion Energy
Gunsu S. Yun: Pohang University of Science and Technology
Eisung Yoon: Ulsan National Institute of Science and Technology
George McKee: General Atomics

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Magnetic islands (MIs), resulting from a magnetic field reconnection, are ubiquitous structures in magnetized plasmas. In tokamak plasmas, recent researches suggested that the interaction between an MI and ambient turbulence can be important for the nonlinear MI evolution, but a lack of detailed experimental observations and analyses has prevented further understanding. Here, we provide comprehensive observations such as turbulence spreading into an MI and turbulence enhancement at the reconnection site, elucidating intricate effects of plasma turbulence on the nonlinear MI evolution.

Date: 2021
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DOI: 10.1038/s41467-020-20652-9

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