A guiding-center Fokker-Planck collision operator for nonuniform magnetic fields

Details A guiding-center Fokker-Planck collision operator for nonuniform magnetic fields A guiding-center Fokker-Planck collision operator for nonuniform magnetic fields

2004-05-11

arxiv.org/abs/physics/0405052v2

Physics of Plasmas, vol. 11, 4429-4438 (2004)

Physics

Plasma Physics

21 pages, Latex, to appear in Physics of Plasmas

Scientific paper

10.1063/1.1780532

A new formulation for collisional kinetic theory is presented based on the use of Lie-transform methods to eliminate fast orbital time scales from a general bilinear collision operator. As an application of this new formalism, a general guiding-center bilinear Fokker-Planck (FP) collision operator is derived following the elimination of the fast gyromotion time scale of a charged particle moving in a nonuniform magnetic field. It is expected that classical transport processes in a strongly magnetized nonuniform plasma can, thus, be described in terms of this reduced guiding-center FP kinetic theory. The present paper introduces the reduced-collision formalism only while its applications are left to future work.

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