Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...123..343j&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 123, no. 2, July 1983, p. 343-346.
Astronomy and Astrophysics
Astrophysics
30
Charged Particles, Comet Nuclei, Cosmic Rays, Ice, Solar Wind, Sputtering, Abundance, Cosmochemistry, Erosion, Frost, Irradiation, Volatility, Comets, Charged Particles, Erosion, Volatiles, Grains, Irradiation, Icy Bodies, Surface, Composition, Carbon Dioxide, Temperature, Grains, Carbon Monoxide, Oxygen, Data
Scientific paper
Recent laboratory data show that charged particles can effectively erode frozen volatiles, and new molecular species can be produced in some irradiated molecular ice films. Such results have relevance to the competition between collection and loss of volatiles by icy bodies in the solar system and have implications for the nature of the surface composition of these bodies. In CO2 frost, ion irradiation at 10K results in a significant increase in volatility when the ice temperature is raised to about 50K, and CO and O2 are ejected as well as CO2. Implications of these results for ice grains and large icy bodies such as comets are discussed.
Augustyniak W. M.
Brown Warren L.
Johnson Robert E.
Lanzerotti Louis J.
Mussil C.
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