The interplanetary transport of solar cosmic rays

Details The interplanetary transport of solar cosmic rays The interplanetary transport of solar cosmic rays

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...241l.129g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 241, Oct. 15, 1980, p. L129-L132.

Astronomy and Astrophysics

Astrophysics

13

Interplanetary Medium, Radiative Transfer, Solar Cosmic Rays, Adiabatic Conditions, Focusing, Scatter Propagation

Scientific paper

Numerical solutions are presented for the propagation of solar cosmic rays in interplanetary space, including the effects of pitch-angle scattering and adiabatic focusing. The intensity-time profiles can be well fitted by a simple radial spatial diffusion equation with scattering mean-free path lambda(fit). The radial mean-free path so obtained is significantly larger than the true scattering mean-free path for low-rigidity particles due to both adiabatic focusing and the inapplicability of the diffusive approximation early in the event. The well-known discrepancy between lambda(fit) and the theoretical predictions may be resolved by these calculations.

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