ULTRAVIOLET PHOTON-INDUCED SYNTHESIS AND TRAPPING OF H{sub 2}O{sub 2} AND O{sub 3} IN POROUS WATER ICE FILMS IN THE PRESENCE OF AMBIENT O{sub 2}: IMPLICATIONS FOR EXTRATERRESTRIAL ICE

Journal Article · Thu Sep 01 00:00:00 EDT 2011 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/738/1/L3· OSTI ID:21562452

Shi, J; Raut, U; Kim, J -H; Baragiola, R A ^[1]; Loeffler, M ^[2]

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1. Laboratory of Atomic and Surface Physics, University of Virginia, Charlottesville, VA 22904 (United States)
2. Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

The mass uptake of ambient oxygen in nanoporous ice is enhanced by irradiation with 193 nm photons, due to conversion of O{sub 2} into H{sub 2}O{sub 2} and O{sub 3}, with an efficiency that increases with decreasing temperature. These findings show a new way to form H{sub 2}O{sub 2} and O{sub 3} on icy surfaces in the outer solar system at depths much larger than are accessible by typical ionizing radiation, with possible astrobiological implications.

• OSTI ID: 21562452
• Journal Information: Astrophysical Journal Letters, Vol. 738, Issue 1; Other Information: DOI: 10.1088/2041-8205/738/1/L3; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
HYDROGEN PEROXIDE
ICE
MASS
OXYGEN
OZONE
PHOTONS
POROUS MATERIALS
SYNTHESIS
TRAPPING
ULTRAVIOLET RADIATION
UPTAKE
WATER
BOSONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
HYDROGEN COMPOUNDS
MASSLESS PARTICLES
MATERIALS
NONMETALS
OXYGEN COMPOUNDS
PEROXIDES
RADIATIONS