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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…
Calculation of toroidal Alfvén eigenmode mode structure in general axisymmetric toroidal geometry
Guangyu Wei, Matteo Valerio Falessi, Tao Wang +2
A workflow is developed based on the ideal MHD model to investigate the linear physics of various Alfvén eigenmodes in general axisymmetric toroidal geometry, by solving the couple…
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…