Evaporation of H2O-CO ice and its astrophysical implications

Details Evaporation of H2O-CO ice and its astrophysical implications Evaporation of H2O-CO ice and its astrophysical implications

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jcrgr..99.1220k&link_type=abstract

(International Organization of Crystal Growth, MOESC, Science and Technology Agency of Japan, et al., International Conference o

Computer Science

43

Carbon Monoxide, Electron Diffraction, Evaporation, Interstellar Matter, Water, Adsorption, Comets, Ice, Molecular Clouds, Temperature Dependence, Vapor Pressure

Scientific paper

In the present mass spectroscopy and electron diffraction study of the evaporation of H2O-CO ice, in which at 10 K approximately half of the amorphous CO is adsorbed on amorphous H2O while the residual CO portion is included in the H2O as an impurity, notes the amorphous CO to crystallize into alpha-CO upon warming to 23 K. CO adsorbed on the surface of amorphous H2O evaporated at 30-45 K. At 143 K, amorphous H2O is transformed into ice and the residual CO evaporates completely. Attention is given to the implications of these experimental results for the condensation of CO in interstellar molecular clouds, as well as for the evaporation of H2O-CO ice in the primordial solar nebula.

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