Physics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...68..266k&link_type=abstract
Icarus (ISSN 0019-1035), vol. 68, Nov. 1986, p. 266-275.
Physics
11
Atmospheric Physics, Comets, Condensation, Ice, Sublimation, Density Distribution, Halley'S Comet, Hydrodynamics, Radii, Comets, Hydrodynamics, Condensation, Sublimation, Particles, Formation, Ice, Comet Nuclei, Comae, Heating, Gases, Distance, Size, Parameters, Water Vapor, Nucleation, Calculations, Boundaries
Scientific paper
In the present analysis of ice particle condensation in the vicinity of a cometary nucleus, the hydrodynamic equation solutions for ice particles and H2O gas encompass the condensation and sublimation of ice particles as well as the energy exchange between ice particles and the gas in a dustless comet. The sublimation of condensed ice particles leads to a heating of ambient gas to temperatures higher than those predicted by previously proposed models. The results obtained reveal that the survival distance of ice particles against sublimation is longer than that of a previous calculation for a spacecraft encounter of Comet Halley, but that the ice particle size is smaller due to a larger fraction of uncondensed H2O gas.
Kitamura Yoshimi
Yamamoto Tadahiro
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