Effects of a Time-Varying Photoelectron Flux on Spacecraft Potential.
Air Force surveys in Geophysics,
AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS
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Analysis of plasma data from the geosynchronous satellites ATS-5 and ATS-6 shows that the satellites vary rapidly in potential as they pass into and out of the earths shadow. These variations result from the loss of photoelectrons as the sun is eclipsed. A model of this phenomemon which includes the effects of atmospheric attenuation of the solar flux between 1000 A and 3000 A and spacecraft charge buildup is used to predict the potential variations observed by ATS-5 and ATS-6. The model predicts potentials within or - 700 V of the observed potentials in the range -100 V to -10,000 V. Author
- Electricity and Magnetism