NASA NTRS · 19890010798
Active spacecraft potential control: An ion emitter experiment
Abstract
The cluster spacecraft are instrumented with ion emitters for charge neutralization. The emitters produce indium ions at 6 keV. The ion current is adjusted in a feedback loop with instruments measuring the spacecraft potential. The system is based on the evaporation of indium in the apex field of a needle. The design of the active spacecraft potential control instruments, and the ion emitters is presented.
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Riedler, W., Goldstein, R., Hamelin, M., Maehlum, B. N., Troim, J., Olsen, R. C., Pedersen, A., Grard, R. J. L., Schmidt, R., Rudenauer, F.. 1988-10-01. Active spacecraft potential control: An ion emitter experiment. https://ntrs.nasa.gov/citations/19890010798
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