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Cosmic Ray Particle Diffusion and the Fokker-Planck Equation

Published online by Cambridge University Press:  25 April 2016

I. H. Urch
I. H. Urch*
Affiliation:
University of Waikato, New Zealand
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Extract

The Fokker-Planck equation has been used by a number of authors (Jokipii 1966, 1971; Hall and Sturrock 1967; Hasselmann and Wibberentz 1968; Roelof 1968) to deduce the diffusion coefficients of cosmic-ray particles in the interplanetary magnetic field. However, these calculations suggest that the diffusion of particles perpendicular to the mean magnetic field is implausibly large; so large that the validity of a Fokker-Planck approach as applied to the interplanetary medium must be doubted.

Type
Cosmic Ray Astronomy
Information
Publications of the Astronomical Society of Australia , Volume 2 , Issue 5 , September 1974 , pp. 306 - 307
Copyright
Copyright © Astronomical Society of Australia 1974

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References

Chandrasekhar, S., Rev. Mod. Phys., 15 (1943).CrossRefGoogle Scholar
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