Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...669.1414s&link_type=abstract
The Astrophysical Journal, Volume 669, Issue 2, pp. 1414-1421.
Astronomy and Astrophysics
Astronomy
6
Astrochemistry, Ism: Molecules, Methods: Laboratory, Molecular Processes, Planets And Satellites: General
Scientific paper
We have investigated the formation of ozone by electron impact in solid molecular oxygen ices between 11 and 30 K. The amount of ozone formed is shown to be strongly dependent on the sample temperature. As the ice temperature increases, the column density of the ozone monomer is found to diminish. This is ascribed to the loss of oxygen atoms by recombination with a neighboring oxygen atom to ``recycle'' molecular oxygen. In the ``warm-up'' phase after irradiation, two additional temperature-dependent reaction mechanisms were observed to synthesize ozone: (1) a reaction of oxygen atoms from a [O3...O] complex with a neighboring oxygen molecule and (2) a reaction of trapped oxygen atoms with oxygen molecules to yield the ozone monomer. These experiments have important implications to the oxygen chemistry in icy satellites throughout our solar system.
Jamieson Corey S.
Kaiser Ralf I.
Mason Nigel J.
Sivaraman Bhalamurugan
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