Physics
Scientific paper
Feb 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.2085z&link_type=abstract
Journal of Geophysical Research, vol. 103, p. 2085
Physics
73
Cosmic Rays, Radiation Distribution, Particle Diffusion, Heliosphere, Magnetohydrodynamic Turbulence, Plasma Interactions, Radial Distribution, Latitude, Plasma Decay, Ion Distribution, Plasma Drift
Scientific paper
The radial and latitudinal dependence of the cosmic ray diffusion tensor is investigated on the basis of a recently developed model of MHD turbulence in the expanding solar wind (Zank et al., 1996; Matthaeus et al., 1996). In the ecliptic plane, decaying MHD turbulence is assumed to be replenished in situ by turbulence generated through the interaction of streams (both shear and compressional effects) and by the creation of pickup ions. In the polar region, at least during solar minimum, stream-interaction-driven turbulence is neglected, and only pickup ion driven turbulence is included. To model the perpendicular and drift elements of the cosmic ray diffusion tensor, we employ both a quasi-linear theory.
Bieber John W.
Matthaeus William H.
Moraal Harm
Zank Gary P.
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