Trapping of gases by water ice and implications for icy bodies.
The trapping of various gases by water ice at low temperatures (20-80K) and their release from the ice upon warming, was studied experimentally.  The results of these experiments, together with a computation of the thermal evolution of a cometary nucleus, can explain the gas and dust jets which were observed to emanate from the nucleus of P/Halley.  The experimental results are important also to the gas content of Titan.
Bar-Nun
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Department of Geophysics and Planetary Sciences, Tel Aviv University, Israel.
Prialnik
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Laufer
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Kochavi
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D000114:Acetylene; D001128:Argon; D002245:Carbon Dioxide; D002248:Carbon Monoxide; D005118:Extraterrestrial Environment; D005740:Gases; D006856:Hydrogen Cyanide; D007053:Ice; D019110:Meteoroids; D008697:Methane; D009584:Nitrogen; D018539:Saturn; D013696:Temperature; D014867:Water
D005740:Gases; D007053:Ice; D014867:Water; D002245:Carbon Dioxide; D006856:Hydrogen Cyanide; D001128:Argon; D002248:Carbon Monoxide; D009584:Nitrogen; D000114:Acetylene; D008697:Methane