Other
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997arcn.rept..167k&link_type=abstract
Analysis of Returned Comet Nucleus Samples, Proceedings of a Workshop held at Milpitas, California, 16-18 January, 1989. Compil
Other
Halley''S Comet, Organic Materials, Cosmic Dust, Molecular Ions, Mass Spectroscopy, Heavy Ions, Solid Phases, Chemical Reactions, Condensates, Composition (Property), Giotto Mission, Vapor Phases, Refractories
Scientific paper
During the encounters with comet Halley, PICCA on GIOTTO measured the gas phase organic ion composition of the coma, and PUMA on VEGA 1 measured the dust composition. Joining those results a consistent picture of the parent organic matter from which dust and gas is produced can be obtained. One recognizes a complex unsaturated polycondensate, which splits during coma-formation into the more refractory C=C,C-N-containing dust part, and the more volatile C=C,C-O-containing gas part. The responsible exothermal chemical reactions, triggered by the sun light may play a major role in the dynamics of coma formation. The latent heat and reactivity may cause problems regarding a sample return mission.
Kissel Jeff
Korth Alex
Krueger Franz R.
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