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Start Over Author "Qiu, Zhiyong" Journal nuclear fusion
12 results on '"Qiu, Zhiyong"'

2. Fine structure zonal flow excitation by beta-induced Alfvén eigenmode

Author

Qiu, Zhiyong, Chen, Liu, and Zonca, Fulvio

Subjects
beta induced Alfven eigenmode, zonal structure, zonal flow, modulational instability, nonlinear gyrokinetic theory, physics.plasm-ph, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Fluids & Plasmas
Abstract

Nonlinear excitation of low frequency zonal structure (LFZS) by beta-induced Alfvén eigenmode (BAE) is investigated using nonlinear gyrokinetic theory. It is found that electrostatic zonal flow (ZF), rather than zonal current, is preferentially excited by finite amplitude BAE. In addition to the well-known meso-scale radial envelope structure, ZF is also found to exhibit fine radial structure due to the localization of BAE with respect to mode rational surfaces. Specifically, the zonal electric field has an even mode structure at the rational surface where radial envelope peaks.

Published
2016

4. Observation of electrostatic fluctuations driven by runaway electrons in EAST disruption

Author

Tang, Tian, primary, Zeng, Long, additional, Qiu, Zhiyong, additional, Lin, Shiyao, additional, Sun, Youwen, additional, Wei, Guangyu, additional, Zhu, Xiang, additional, Chen, Dalong, additional, Huang, Yao, additional, Duan, Yanmin, additional, Xu, Liqing, additional, Zhuang, Huidong, additional, Liu, Haiqing, additional, Qian, Jinping, additional, Luo, Chenxi, additional, Ti, Ang, additional, Zhao, Hailin, additional, Jie, Yinxian, additional, Liang, YunFeng, additional, and Gao, Xiang, additional

Published
2023
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