Other
Scientific paper
Feb 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..513s&link_type=abstract
Journal of Geophysical Research, vol. 84, Feb. 1, 1979, p. 513-525.
Other
6
Explorer 51 Satellite, Near Wakes, Plasma Diagnostics, Rarefied Plasmas, Satellite Observation, Angular Distribution, Charge Distribution, Electron Energy, Electrostatic Probes, Ion Currents, Plasma Potentials
Scientific paper
Measurements of ion current, electron temperature, and values of space potential obtained from the cylindrical electrostatic probe on board the Atmosphere Explorer C (AE-C) satellite were used to examine, in a parametric manner, the angular distribution of charge around the satellite. Interest is focused on nighttime equatorial data in the altitude range 275-620 km, which yields a wide range for the parameter R sub D (the radius of the satellite divided by the ambient value of the Debye lengths), including R sub D greater than 100, which is of practical significance to large space platforms. The variations of normalized ion current in the wake zone of the AE-C satellite appear to display an exponential dependence on R sub D for 'constant' values of other relevant parameters. The angular variations of electron temperature and space potential in the close vicinity of the satellite's surface were examined and compared with results from the Explorer 31 satellite. The variation of the ratio of measured to computed space potential with electron temperature was examined using data from both the AE-C and Explorer 31 satellites. It was found that the ratio is greater than unity. Possible causes for the above inequality are discussed.
Brace L.
Gordon Rachel
Samir Uri
Theis R.
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