Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250b.191l&link_type=abstract
The Exploration of Halley's Comet. Volume 2: Dust and Nucleus Proceedings of the 20th ESLAB Symposium held in Heidelberg, West G
Astronomy and Astrophysics
Astronomy
Scientific paper
The impact plasma and momentum detector (DIDSY-IPM) was the most sensitive detector among the DIDSY dust impact sensors on board the "GIOTTO" spacecraft. It was protected by a 3 plastic foil cover which was supposed to be retracted before the Halley encounter. The IPM data from Halley encounter in comparison with dust fluxes, derived from the PIA experiment and in combination with the results from laboratory experiments, lead to the conclusion that the protective cover of the IPM-sensor was not released properly before closest approach. This implies that only the dust flux of particles with masses larger than the penetration limits for 2 or 3 of the cover foils (m ≥ 3×10-10g and 10-9g, respectively) can be determined. There is evidence that the IPM protective cover was released shortly before closest approach.
Bussoletti Ezio
Göller J.R.
Grard Rejean J. L.
Grün Eberhard
Kissel Jeff
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