On Monte Carlo Operators Describing Coulomb Collisions in Toroidal Plasmas

摘要

Modelling of ICRF-heating can be carried out with Monte *Carlo codes with operators describing the wave-particle interactions and Coulomb,collisions. The collision operator describes the transfer of power to the background species and relaxation towards a local isotropic distribution function. The ion-ion collisions are important for isotropization of the perturbed distribution functions, because they produce a radial electric field in the neoclassical particle transport. In uniform plasma the Coulomb collisions should relax the distribution function towards a Maxwellian with constant density and temperature.