Analytical description of charged particle transport along arbitrary guiding field configurations
Abstract
Aspects of charged particle transport theory have been studied by Earl (1973, 1974, 1976) in a number of investigations. The investigations were conducted under the assumption that particles propagate along a DC guiding field with negligible perpendicular transport and that pitchangle scattering by random fields can be described by the FokkerPlanck formalism. The present study provides a generalized and simplified treatment of focused transport. The first step is taken with respect to a perturbation analysis by which the Boltzmann equation is solved in terms of successively improved approximations to its exact solution. The first approximation is the sum of isotropic pseudodiffusive and anisotropic supercoherent components whose coefficients must satisfy two coupled partial differential equations. The normalization constant K and the pseudodiffusive velocity, which appear in the firstorder transport equations, are given by simple integrals over the pitch angle.
 Publication:

The Astrophysical Journal
 Pub Date:
 December 1981
 DOI:
 10.1086/159518
 Bibcode:
 1981ApJ...251..739E
 Keywords:

 Boltzmann Transport Equation;
 Charged Particles;
 FokkerPlanck Equation;
 Magnetic Field Configurations;
 Particle Diffusion;
 Transport Theory;
 Angular Distribution;
 Perturbation Theory;
 Pitch (Inclination);
 Solar Corpuscular Radiation;
 Solar Magnetic Field;
 Astrophysics