Physics
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.7705y&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, July 1, 1987, p. 7705-7715.
Physics
6
Dmsp Satellites, High Energy Electrons, Spacecraft Charging, Statistical Analysis, Electron Flux Density, Electron Precipitation, Plasma Potentials, Polar Orbits, Spacecraft Construction Materials, Spectral Energy Distribution
Scientific paper
The current balance equations and simplifying assumptions used in charging models for spacecraft operating in high-inclination, low-altitude polar orbits are identified. The statistical characteristics of the auroral electron precipitation associated with the 11 DMSP satellite charging events reported by Gussenhoven et al. (1985) are presented, and the observed spectra are classified into four types. The spectra are parametrized, and empirical values of the parameters which can be used for charge modeling are presented. The modeled electron distributions are used to calculate the critical energy and net electron current during the DMSP charging events. The charging current is calculated at the surface of various spacecraft materials. The significance of the results for magnetospheric source populations is considered.
Gussenhoven Susan M.
Yeh Hsien-Chi
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