Improved Analytical Description of Parallel Diffusion with Adiabatic Focusing

Details Improved Analytical Description of Parallel Diffusion with Adiabatic Focusing Improved Analytical Description of Parallel Diffusion with Adiabatic Focusing

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...728..113s&link_type=abstract

The Astrophysical Journal, Volume 728, Issue 2, article id. 113 (2011).

Astronomy and Astrophysics

Astronomy

2

Diffusion, Magnetic Fields, Turbulence

Scientific paper

New analytic forms for the parallel diffusion coefficient with adiabatic focusing are presented. For isotropic pitch-angle diffusion, we derive an exact formula for the parallel diffusion coefficient. Those results are correct for weak and strong focusing. For arbitrary pitch-angle scattering, we derive an approximation which is exact up to second order in the focusing strength. Examples and a comparison with previous results are presented too.

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