Measurements of integral yields of charged secondary particles using neutral beams simulating a cometary fly-by

Details Measurements of integral yields of charged secondary particles using neutral beams simulating a cometary fly-by Measurements of integral yields of charged secondary particles using neutral beams simulating a cometary fly-by

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984giot.rept...15s&link_type=abstract

In ESA The Giotto Spacecraft Impact-Induced Plasma Environ. p 15-19 (SEE N85-23905 14-18)

Physics

Atomic Beams, Giotto Mission, Ion Emission, Molecular Beams, Neutral Beams, Plasma Interactions, Secondary Emission, Space Environment Simulation, Aluminum Coatings, Cometary Atmospheres, Gold Coatings, Paints, Thermal Control Coatings

Scientific paper

Atomic and molecular beams bombarded surfaces covered with gold, aluminum and white conductive paint PCB-Z to provide input parameters for a model of plasma-spacecraft interactions during the Giotto Halley's comet fly-by mission. The targets were treated and cleaned similarily to the real spacecraft, i.e., the surfaces were not chemically clean. The average yield, derived using all gases at their respective ram energy on aluminum and PCB-Z, is 20% for secondary electrons and 0.4% for ions.

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