Radial diffusion of energetic tail ions driven by electromagnetic waves of ion-cyclotron range of frequencies in bumpy torus and tokamak geometry

Radial particle and energy transport of the high-energy tail ions created by fundamental resonance heating of ion-cyclotron range of frequency waves is studied for tokamak and bumpy torus geometry. The lowest-order distribution function for the high-energy ions is calculated in a two-dimensional velocity space, and all the diffusion coefficients are explicitly evaluated.