O atom production in water ice: Implications for O2 formation on icy satellites

Details O atom production in water ice: Implications for O2 formation on icy satellites O atom production in water ice: Implications for O2 formation on icy satellites

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgre..11510013c&link_type=abstract

Journal of Geophysical Research, Volume 115, Issue E10, CiteID E10013

Physics

Planetary Sciences: Solid Surface Planets: Ices, Planetary Sciences: Solar System Objects: Europa, Planetary Sciences: Solar System Objects: Ganymede, Planetary Sciences: Solid Surface Planets: Interactions With Particles And Fields

Scientific paper

We have found that O atoms are a primary product in the irradiation of water-ice with 0.8 MeV protons. This observation has implications in understanding the chemical reactions that occur to produce molecular oxygen (O2) in such laboratory ices, as well as ices found on the surfaces of Ganymede and Europa, and the ice particles present in Saturn's rings. We estimate that in irradiated water-ice, O2 can be formed at a lower limit of 0.07% by number relative to water and is in agreement with observations of the icy Jovian satellites.

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