Gyrokinetic particle simulation of fast-electron driven beta-induced Aflvén eigenmode

Journal Article · Sun May 15 00:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4948487· OSTI ID:22600186

Cheng, Junyi; Chen, Yang ^[1]; Zhang, Wenlu ^[2]; Lin, Zhihong ^[3]; Holod, Ihor ^[3]; Li, Ding ^[2]; Cao, Jintao ^[2]

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1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
2. Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
3. Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)

The fast-electron driven beta-induced Alfvén eigenmode (e-BAE) in toroidal plasmas is investigated for the first time using global gyrokinetic particle simulations, where the fast electron is described by the drift kinetic equation. The simulation shows that the e-BAE propagates in the fast electron diamagnetic direction and its polarization is close to an ideal MHD mode. The phase space structure shows that only the fast electron processional resonance is responsible for the e-BAE excitations while fast-ion driven BAE can be excited through all the channels, including transit, bounce, and processional resonance.

• OSTI ID: 22600186
• Journal Information: Physics of Plasmas, Vol. 23, Issue 5; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRONS
EXCITATION
IONS
KINETIC EQUATIONS
MAGNETOHYDRODYNAMICS
PARTICLES
PHASE SPACE
PLASMA
POLARIZATION
RESONANCE
SIMULATION