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 …

Geodesic acoustic modes (GAM) are oscillating zonal structures unique to toroidal plasmas,
and have been extensively studied in the past decades due to their potential capabilities of …

Interaction between shear Alfvén wave (SAW) and energetic particles (EPs) is one of major
concerns in magnetically confined plasmas since it may lead to excitation of toroidal …

We demonstrate 2D reconstructions of the fast-ion velocity distribution from two-view fast-ion
D-alpha (FIDA) measurements at the EAST tokamak. By expressing the distribution in a …

Nonlinear saturation of a toroidal Alfvén eigenmode via ion induced scattering is
investigated in the short-wavelength gyrokinetic regime. It is found that the nonlinear …

Recently, stationary plasma with a world-record pulse length of 1056 s was achieved on the
Experimental Advanced Superconducting Tokamak (EAST). In this work, the core …

Multiple toroidal Alfvén eigenmodes (TAEs) driven unstable by energetic electrons and a
geodesic acoustic mode (GAM) have been successively observed in the Experimental …

We demonstrate that in a nonuniform plasma, the parametric decay instabilities of kinetic
Alfvén waves could be quantitatively and qualitatively different from that in a uniform plasma …

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 …

Numerical simulations of Alfvén modes driven by energetic particles are performed with the
gyrokinetic (GK) global particle-in-cell code ORB5. A reversed shear equilibrium magnetic …