The Parallel Diffusion Coefficient and Adiabatic Focusing of Cosmic-Ray Particles

Details The Parallel Diffusion Coefficient and Adiabatic Focusing of Cosmic-Ray Particles The Parallel Diffusion Coefficient and Adiabatic Focusing of Cosmic-Ray Particles

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012apj...745...62l&link_type=abstract

The Astrophysical Journal, Volume 745, Issue 1, article id. 62 (2012).

Astronomy and Astrophysics

Astronomy

Cosmic Rays, Diffusion, Magnetic Fields

Scientific paper

In this paper, the problem of focused particle transport is revisited. A description in terms of a system of stochastic differential equations, completely equivalent to the Fokker-Planck equation, is suggested. The coefficient for spatial diffusion parallel to the mean magnetic field is calculated. The case of isotropic pitch angle scattering and weak focusing is analyzed in detail. The disagreement between a recent analysis by Shalchi and other treatments of the same problem is discussed.

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