Computer Science
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...94..326h&link_type=abstract
Icarus, Volume 94, Issue 2, p. 326-332.
Computer Science
32
Scientific paper
The sublimation of Ar/H2O, CO/H2O, and CO2/H2O mixtures condensed at 23-30 K was investigated. The release of the more volatile component of the ice mixture occurred in several discrete temperature regions. Gas release, as monitored by a mass spectrometer, was correlated with changes in the infrared spectrum of the solid ice. The results are in substantial agreement with those of Bar-Nun and co-workers, who studied ice sublimation using mass spectrometry alone, and Sanford and Allamandola, who used infrared spectroscopy alone. Several different concentrations were used for all gas/H2O mixtures, and relative peak intensities during warming were found to depend on the initial gas/H2O ratio. The sublimation of H2O, CO/H2O, and CO2/H2O ices following irradiation by 1-MeV protons was also studied. Irradiation of CO or CO2 containing ices resulted in CO2 or CO release, respectively, in addition to the original species. Some implications for cometary phenomena are given.
Donn Bertram
Hudson Reggie L.
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