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Diffusion of cold magnetospheric ions
- Source :
- Journal of Geophysical Research. 86
- Publication Year :
- 1981
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1981.
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Abstract
- The paper investigates conditions under which a diffusion equation is a valid description of the transport across magnetic field lines of low energy magnetospheric plasma. The case in which the guiding center drift and its fluctuating component are comparable in size to the particle thermal speed is considered. It is concluded that a two-dimensional diffusion equation is valid in the alpha-beta space of the Euler potentials, provided that the fluctuations have a short enough correlation time so that the guiding center drifts remain negligible, and ions in Jupiter's Io plasma torus can thus be described by a diffusion equation if the correlation time is no more than a few rotation periods of the planet.
- Subjects :
- Geophysics
Subjects
Details
- Language :
- English
- Volume :
- 86
- Database :
- NASA Technical Reports
- Journal :
- Journal of Geophysical Research
- Publication Type :
- Report
- Accession number :
- edsnas.19820028652
- Document Type :
- Report