CosmicRay Propagation in Inhomogeneous Largescale Magnetic Fields  a PitchAngle Diffusion and Convection
Abstract
A drift kinetic theory of cosmicray (CR) propagation in inhomogeneous random largescale magnetic fields (MF) is considered. An averaging of the drift kinetic equation for CR particles distribution was performed in the statistical ensemble of MF realization, whereby the curvature radius of randomly wandering MF is much larger than gyroradiusR _{H} of CR particles. Collisions of CR particles on the smallscale MF inhomogeneities with the characteristics scalel _{O} ≪R _{H} is not taken into account. It is proved that this random MF raises nonzero pitchangle diffusion of the CR particles, which is very strong for particles with zero pitch angle. The transport equation is derived for a case of weak inhomogeneity of the random MF in the direction of MF mean value. In this case additional convection of particles in the direction of energy density gradient of random MF variables.
 Publication:

Astrophysics and Space Science
 Pub Date:
 April 1990
 DOI:
 10.1007/BF00655607
 Bibcode:
 1990Ap&SS.166...49K
 Keywords:

 Cosmic Rays;
 Magnetic Field Configurations;
 Particle Diffusion;
 Astrophysics;
 Convection;
 Kinetic Theory;
 Pitch (Inclination);
 Astrophysics