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14 papers · 1 filter
Implementation of energy transfer technique in ORB5 to study collisionless wave-particle interactions in phase-space
Ivan Novikau, Alessandro Biancalani, Alberto Bottino +7
A new diagnostic has been developed to investigate the wave-particle interaction in the phase-space in gyrokinetic particle-in-cell codes. Based on the projection of energy transfe…
Coherent transport structures in magnetized plasmas II: Numerical results
G. Di Giannatale, M. V. Falessi, D. Grasso +2
In a pair of linked articles (called Article I and II respectively) we apply the concept of Lagrangian Coherent Structures borrowed from the study of Dynamical Systems to magnetic…
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…