FORMATION OF D{sub 2}-WATER AND D{sub 2}-CARBONIC ACID IN OXYGEN-RICH SOLAR SYSTEM ICES VIA D{sup +}{sub 2} IRRADIATION
Molecular oxygen (O{sub 2}) and carbon dioxide (CO{sub 2}) ices were irradiated with energetic D{sup +}{sub 2} ions to simulate the exposure of oxygen-bearing solar system ices to magnetospheric H{sup +}{sub 2} and H{sup +} ions and energetic protons from the solar wind. The experiments provided evidence on the incorporation of the implanted deuterium and inherent formation of D{sub 2}-water (D{sub 2}O) as well as D{sub 2}-carbonic acid (D{sub 2}CO{sub 3}). In the molecular oxygen ices, the temporal profiles inferred that D{sub 2}-water formation followed successive deuterium atom addition to atomic oxygen via a D-hydroxyl radical intermediate in the matrix. In the carbon dioxide ices, D{sub 2}-carbonic acid was likely formed via successive deuterium atom reaction with cyclic carbon trioxide. These chemical processes have specific relevance to water formation on outer solar system bodies, such as the icy moons of Jupiter and Saturn, as well as possible implications for the formation of water on the lunar surface.
- OSTI ID:
- 21576759
- Journal Information:
- Astrophysical Journal, Vol. 733, Issue 2; Other Information: DOI: 10.1088/0004-637X/733/2/79; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COSMOLOGY AND ASTRONOMY
CARBON DIOXIDE
CARBONIC ACID
DEUTERIUM IONS
HEAVY WATER
ICE
IRRADIATION
JUPITER PLANET
MOON
OXYGEN
PROTONS
SATURN PLANET
SOLAR SYSTEM
SOLAR WIND
BARYONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
DEUTERIUM COMPOUNDS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC COMPOUNDS
IONS
NONMETALS
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PLANETS
SATELLITES
SOLAR ACTIVITY
STELLAR ACTIVITY
STELLAR WINDS
WATER