Orbit-averaged Guiding-center Fokker-Planck Operator

Authors :: Brizard, A. J.
Decker, J.
Peysson, Y.
Duthoit, F. -X.
Publication Year :: 2009
Abstract: A general orbit-averaged guiding-center Fokker-Planck operator suitable for the numerical analysis of transport processes in axisymmetric magnetized plasmas is presented. The orbit-averaged guiding-center operator describes transport processes in a three-dimensional guiding-center invariant space: the orbit-averaged magnetic-flux invariant $\ov{\psi}$, the minimum-B pitch-angle coordinate $\xi_{0}$, and the momentum magnitude $p$.<br />Comment: 12 pages, accepted for publication in Physics of Plasmas