Nonlinear Frequency Oscillation of Alfven Eigenmodes in Fusion Plasmas

被引：74
|
作者：
Zhang, H. S. [1 ,2 ]
Lin, Z. [1 ]
Holod, I. [1 ]
机构：
[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
[2] Peking Univ, Fus Simulat Ctr, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 02期
基金：
美国国家科学基金会;
关键词：
TRANSPORT; MODES;
D O I：
10.1103/PhysRevLett.109.025001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A nonlinear oscillation of frequency and amplitude is found by massively parallel gyrokinetic simulations of Alfven eigenmodes excited by energetic particles in toroidal plasmas. The fast and repetitive frequency chirping is induced by the evolution of coherent structures in the phase space. The dynamics of the coherent structures is controlled by the competition between the phase-space island formation due to the nonlinear particle trapping and the island destruction due to the free streaming. The chirping dynamics provides a conceptual framework for understanding nonlinear wave-particle interactions underlying the transport process in collisionless plasmas.
引用
收藏
页数：5
相关论文
共 50 条
  • [1] Measurements of Alfven eigenmodes in fusion plasmas
    Van Zeeland, M. A.
    Kramer, G. J.
    BURNING PLASMA DIAGNOSTICS, 2008, 988 : 103 - +
  • [2] Nonlinear frequency chirping of toroidal Alfven eigenmodes in tokamak plasmas
    Zhu, J.
    Ma, Z. W.
    Fu, G. Y.
    NUCLEAR FUSION, 2014, 54 (12)
  • [3] Regulation of Alfven Eigenmodes by Microturbulence in Fusion Plasmas
    Liu, P.
    Wei, X.
    Lin, Z.
    Brochard, G.
    Choi, G. J.
    Heidbrink, W. W.
    Nicolau, J. H.
    McKee, G. R.
    PHYSICAL REVIEW LETTERS, 2022, 128 (18)
  • [4] Nonlinear dynamics of Alfven eigenmodes in toroidal plasmas
    Chen, L
    Zonca, F
    Santoro, RA
    Hu, G
    PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 (11) : 1823 - 1829
  • [5] Nonlinear dynamics of Alfven eigenmodes in toroidal plasmas
    Univ of California, Irvine, United States
    Plasma Phys Controlled Fusion, 11 (1823-1829):
  • [6] Excitation of low frequency Alfven eigenmodes in toroidal plasmas
    Liu, Yaqi
    Lin, Zhihong
    Zhang, Huasen
    Zhang, Wenlu
    NUCLEAR FUSION, 2017, 57 (11)
  • [7] Nonlinear simulation of multiple toroidal Alfven eigenmodes in tokamak plasmas
    Zhu, Xiao-Long
    Wang, Feng
    Wang, Zheng-Xiong
    CHINESE PHYSICS B, 2020, 29 (02)
  • [8] NONLINEAR GLOBAL ALFVEN EIGENMODES
    BRUNEL, F
    LEBOEUF, JN
    MAHAJAN, SM
    PHYSICAL REVIEW LETTERS, 1985, 54 (12) : 1252 - 1255
  • [9] Alfven frequency modes and global Alfven eigenmodes
    Villard, L
    Vaclavik, J
    NUCLEAR FUSION, 1997, 37 (03) : 351 - 360
  • [10] Theory and observations of high frequency Alfven eigenmodes in low aspect ratio plasmas
    Gorelenkov, NN
    Fredrickson, E
    Belova, E
    Cheng, CZ
    Gates, D
    Kaye, S
    White, R
    NUCLEAR FUSION, 2003, 43 (04) : 228 - 233
12345