1 citations · 2 across the 9 of their papers we have counts for
8 papers · 1 filter
On How Zonal Fields Suppress Reversed Shear Alfvén Eigenmode in Tokamak Plasmas
Ruirui Ma, Pengfei Liu, Liu Chen +2
Employing both nonlinear gyrokinetic simulations and theoretical analyses, we have discovered the novel result that, with energetic particle dynamics kept linear, the nonlinear sup…
Indirect nonlinear interaction between toroidal Alfvén eigenmode and ion temperature gradient mode mediated by zonal structures
Qian Fang, Guangyu Wei, Ningfei Chen +3
The indirect nonlinear interactions between toroidal Alfvén eigenmode (TAE) and ion temperature gradient mode (ITG) are investigated using nonlinear gyrokinetic theory and ballooni…
Drift wave solitons and zonal flows: implication on staircase formation
Ningfei Chen, Liu Chen, Fulvio Zonca +1
The self-consistent nonlinear interaction of drift wave (DW) and zonal flow (ZF) is investigated using nonlinear gyrokinetic theory, with both spontaneous excitation and beat-drive…
Effects of plasma nonuniformity on zero frequency zonal structure generation by drift Alfven wave instabilities in toroidal plasmas
Zhiyong Qiu, Guangyu Wei, Liu Chen +1
Effects of plasma nonuniformity on zero frequency zonal structure (ZFZS) excitation by drift Alfven wave (DAW) instabilities in toroidal plasmas are investigated using nonlinear gy…
On beat-driven and spontaneous excitations of zonal flows by drift waves
Liu Chen, Zhiyong Qiu, Fulvio Zonca
Using the slab plasma as a paradigm model, we have derived analytically equations for the nonlinear generation of zero-frequency zonal flows by electron drift waves including, on t…
Drift wave soliton formation via forced-driven zonal flow and implication on plasma confinement
Ningfei Chen, Liu Chen, Fulvio Zonca +1
In this work, gyrokinetic theory of drift waves (DWs) self-regulation via the forced driven zonal flow (ZF) is presented, and finite diamagnetic drift frequency due to plasma nonun…
On Validity of Gyrokinetic Theory
Haotian Chen, Liu Chen, Fulvio Zonca +2
We study the validity of gyrokinetic theory by examining the destruction of magnetic moment adiabatic invariant in the presence of fluctuations. Contrary to common assertions, it i…
Experimental Evidence of Nonlinear Avalanche Dynamics of Energetic Particle Modes
L. M. Yu, F. Zonca, Z. Y. Qiu +17
Recent observations in HL-2A tokamak give new experimental evidences of energetic particle mode (EPM) avalanche. In a strong EPM burst, the mode structure propagates radially outwa…