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5 papers · 2 filters
Nonlinear excitation of fine-radial-scale zonal structures by toroidal Alfven eigenmode
Zhiyong Qiu, Liu Chen, Fulvio Zonca
The set of equations describing nonlinear evolution of a single toroidal Alfven eigenmode are derived, including both zero frequency zonal structure (ZFZS) generation and wave-part…
Nonlinear interplay of Alfven instabilities and energetic particles in tokamaks
A. Biancalani, A. Bottino, M. Cole +5
The confinement of energetic particles (EP) is crucial for an efficient heating of tokamak plasmas. Plasma instabilities such as Alfven Eigenmodes (AE) can redistribute the EP popu…
Effects of energetic particles on zonal flow generation by toroidal Alfven eigenmode
Zhiyong Qiu, Liu Chen, Fulvio Zonca
Generation of zonal ow (ZF) by energetic particle (EP) driven toroidal Alfven eigenmode (TAE) is investigated using nonlinear gyrokinetic theory. It is found that, nonlinear resona…
Fine Structure Zonal Flow Excitation by Beta-induced Alfven Eigenmode
Zhiyong Qiu, Liu Chen, Fulvio Zonca
Nonlinear excitation of low frequency zonal structure (LFZS) by beta-induced Alfven eigenmode (BAE) is investigated using nonlinear gyrokinetic theory. It is found that electrostat…
On the viability of the single wave model for the beam plasma instability
Nakia Carlevaro, Giovanni Montani, Davide Terzani
We analyze the interaction of a cold fast electron beam with a thermalized plasma, in the presence of many Langmuir modes. The work aims at characterizing the deviation of the syst…