Nonlinear dynamics of beta-induced Alfvén eigenmode driven by energetic particles
نویسندگان
چکیده
منابع مشابه
Nonlinear dynamics of beta-induced Alfvén eigenmode driven by energetic particles.
Nonlinear saturation of a beta-induced Alfvén eigenmode, driven by slowing down energetic particles via transit resonance, is investigated by the nonlinear hybrid magnetohyrodynamic gyrokinetic code. Saturation is characterized by frequency chirping and symmetry breaking between co- and counter-passing particles, which can be understood as the evidence of resonance detuning. The scaling of the ...
متن کاملNonlinear dynamics of beta-induced Alfv en eigenmode in tokamak
H. S. Zhang, Z. Lin, W. Deng, I. Holod, Z. X. Wang, Y. Xiao, and W. L. Zhang Fusion Simulation Center, Peking University, Beijing 100871, China Department of Physics and Astronomy, University of California, Irvine, California 92697, USA Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, China CAS Key Laboratory of Plasma Physics, University of Science and Technolo...
متن کاملMagneto - HydroDynamic Activity and Energetic Particles ∼ Application to Beta Alfvén Eigenmodes ∼ by Christine Nguyen A dissertation
The goal of magnetic fusion research is to extract the power released by fusion reactions andcarried by the product of these reactions, liberated at energies of the order of a few MeV. Thefeasibility of fusion energy production relies on our ability to confine these energetic particles,while keeping the thermonuclear plasma in safe operating conditions. For that purpose, it isne...
متن کاملThe Berk - Breizman Model as a Paradigm for Energetic Particle - driven Alfvén Eigenmodes by Maxime Lesur
The achievement of sustained nuclear fusion in magnetically confined plasma relies on efficient confinement of alpha particles, which are high-energy ions produced by the fusion reaction. Such particles can excite instabilities in the frequency range of Alfvén Eigenmodes (AEs), which significantly degrade their confinement and threatens the vacuum vessel of future reactors. In order to develop ...
متن کاملLinear and Nonlinear Properties of Geodesic Acoustic Mode and Beta-induced Alfvén Eigenmode
Global gyrokinetic toroidal code (GTC) is used to study the low-frequency modes in tokamaks including geodesic acoustic mode (GAM) and beta-induced Alfvén eigenmode (BAE). GAM and BAE have the same frequency due to the geodesic curvature and thermal particle compressibility in toroidal plasmas. Important new insights include: the collisionless damping rate of the GAM is greatly enhanced by trap...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 2012
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.86.045401