149 citations · 966 across the 66 of their papers we have counts for
8 papers · 1 filter
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…
Core localized alpha-channeling via low frequency Alfven mode generation in reversed shear scenarios
Zhiyong Qiu, Shizhao Wei, Tao Wang +2
A novel channel for fuel ions heating in tokamak core plasma is proposed and analyzed using nonlinear gyrokinetic theory. The channel is achieved via spontaneous decay of reversed…
Nonlinear interaction of Alfvénic instabilities and turbulence via the modification of the equilibrium profiles
A. Biancalani, A. Bottino, D. Del Sarto +10
Nonlinear simulations of Alfvén modes (AM) driven by energetic particles (EP) in the presence of turbulence are performed with the gyrokinetic particle-in-cell code ORB5. The AMs c…
Gyrokinetic theory of toroidal Alfvén eigenmode saturation via nonlinear wave-wave coupling
Zhiyong Qiu, Liu Chen, Fulvio Zonca
Nonlinear wave-wave coupling constitutes an important route for the turbulence spectrum evolution in both space and laboratory plasmas. For example, in a reactor relevant fusion pl…
On Nonlinear Scattering of Drift Wave by Toroidal Alfven Eigenmode in Tokamak Plasmas
Liu Chen, Zhiyong Qiu, Fulvio Zonca
Using electron drift wave (eDW) as a paradigm model, we have investigated analytically direct wave-wave interactions between a test DW and ambient toroidal Alfvén eigenmodes (TAE)…
Nonlinear equilibria and transport processes in burning plasmas
Matteo Valerio Falessi, Liu Chen, Zhiyong Qiu +1
In this work, we put forward a general phase-space transport theory in axisymmetric tokamak plasmas based upon the concept of zonal state (ZS). Within this theoretical framework, t…