Unexpanded nonlinear electromagnetic gyrokinetic equations for magnetized plasmas

Liu CHEN (陈骝); Fulvio ZONCA; Haotian CHEN (陈昊天)

doi:10.1088/2058-6272/aba187

Plasma Science and Technology > 2020 > 22(10): 102001. > DOI: 10.1088/2058-6272/aba187

Liu CHEN (陈骝), Fulvio ZONCA, Haotian CHEN (陈昊天). Unexpanded nonlinear electromagnetic gyrokinetic equations for magnetized plasmas[J]. Plasma Science and Technology, 2020, 22(10): 102001. DOI: 10.1088/2058-6272/aba187

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Unexpanded nonlinear electromagnetic gyrokinetic equations for magnetized plasmas

¹ Institute for Fusion Theory and Simulation and Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China
² Department of Physics and Astronomy, University of California, Irvine, CA 92697, United States of America
³ ENEA, Fusion and Nuclear Safety Department, C. R. Frascati, Via E. Fermi 45, 00044 Frascati (Roma), Italy
⁴ Institute of Space Science and Technology, Nanchang University, Nanchang 330031, People's Republic of China

Funds: This work was supported by National Natural Science Fundation of China (Nos. 11235009 and 11905097), and Fundamental Research Fund for Chinese Central Universities (No. 2019FZA3003). This work was also carried out within the framework of the EUROfusion Consortium and received funding from Euratom research and training programme 2014–2018 and 2019–2020 under Grant Agreement No. 633053 (Project No. WP19-ER/ENEA-05).

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Received Date: May 05, 2020
Revised Date: June 28, 2020
Accepted Date: June 29, 2020

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Abstract

Abstract

Nonlinear electromagnetic gyrokinetic equations have been constructed without expanding the field variables into background and finite but small-amplitude fluctuating components. At the long-wavelength limit, these unexpanded nonlinear gyrokinetic equations recover the well-known drift-kinetic equations. At the expanded limit, they recover the usual nonlinear gyrokinetic equations. These equations can therefore be applied to long-term simulations covering from microscopic to macroscopic spatial scales.
- gyrokinetic theory,
- plasma turbulence,
- nonlinear phenomena

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Unexpanded nonlinear electromagnetic gyrokinetic equations for magnetized plasmas