Ultraviolet photon-induced synthesis and trapping of H2O 2 and O3 in porous water ice films in the presence of ambient O2: Implications for extraterrestrial ice

J. Shi; U. Raut; J. H. Kim; M. Loeffler; R. A. Baragiola

doi:10.1088/2041-8205/738/1/L3

Ultraviolet photon-induced synthesis and trapping of H₂O ₂ and O₃ in porous water ice films in the presence of ambient O₂: Implications for extraterrestrial ice

J. Shi, U. Raut, J. H. Kim, M. Loeffler, R. A. Baragiola

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The mass uptake of ambient oxygen in nanoporous ice is enhanced by irradiation with 193 nm photons, due to conversion of O₂ into H ₂O₂ and O₃, with an efficiency that increases with decreasing temperature. These findings show a new way to form H ₂O₂ and O₃ on icy surfaces in the outer solar system at depths much larger than are accessible by typical ionizing radiation, with possible astrobiological implications.

Original language	English (US)
Article number	L3
Journal	Astrophysical Journal Letters
Volume	738
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/738/1/L3
State	Published - Sep 1 2011
Externally published	Yes

Keywords

atomic processes
methods: laboratory
planets and satellites: atmospheres
planets and satellites: surfaces
radiation mechanisms: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/2041-8205/738/1/L3

Cite this

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abstract = "The mass uptake of ambient oxygen in nanoporous ice is enhanced by irradiation with 193 nm photons, due to conversion of O2 into H 2O2 and O3, with an efficiency that increases with decreasing temperature. These findings show a new way to form H 2O2 and O3 on icy surfaces in the outer solar system at depths much larger than are accessible by typical ionizing radiation, with possible astrobiological implications.",

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AU - Kim, J. H.

AU - Loeffler, M.

AU - Baragiola, R. A.

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KW - methods: laboratory

KW - planets and satellites: atmospheres

KW - planets and satellites: surfaces

KW - radiation mechanisms: general

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