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.

Magnetic reconnection and plasma turbulence occur in atmospheric and magnetized laboratory plasmas. Here the authors report evolution of magnetic islands and plasma turbulence in tokamak plasmas using high resolution 2D electron cyclotron emission diagnostics.

Details

Title
Effects of plasma turbulence on the nonlinear evolution of magnetic island in tokamak
Author
Choi, Minjun J 1   VIAFID ORCID Logo  ; Lāszlo, Bardōczi 2 ; Jae-Min, Kwon 3 ; Hahm, T S 4 ; Park, Hyeon K 5 ; Kim Jayhyun 6 ; Woo Minho 6 ; Byoung-Ho, Park 6 ; Yun, Gunsu S 7   VIAFID ORCID Logo  ; Yoon Eisung 5 ; McKee, George 2 

1  Korea Institute of Fusion Energy, Daejeon, Republic of Korea 
2  General Atomics, San Diego, USA (GRID:grid.192673.8) (ISNI:0000 0004 0634 455X) 
3  Korea Institute of Fusion Energy, Daejeon, Republic of Korea (GRID:grid.192673.8) 
4  Seoul National University, Seoul, Republic of Korea (GRID:grid.31501.36) (ISNI:0000 0004 0470 5905) 
5  Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea (GRID:grid.42687.3f) (ISNI:0000 0004 0381 814X) 
6  Korea Institute of Fusion Energy, Daejeon, Republic of Korea (GRID:grid.42687.3f) 
7  Pohang University of Science and Technology, Pohang, Republic of Korea (GRID:grid.49100.3c) (ISNI:0000 0001 0742 4007) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-020-20652-9
ProQuest document ID
2477821752
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.