ULTRAVIOLET PHOTON-INDUCED SYNTHESIS AND TRAPPING OF H2O2 AND O3 IN POROUS WATER ICE FILMS IN THE PRESENCE OF AMBIENT O2: IMPLICATIONS FOR EXTRATERRESTRIAL ICE

被引：13

作者：

Shi, J. ^{[1
]}

Raut, U. ^{[1
]}

Kim, J. -H. ^{[1
]}

Loeffler, M. ^{[2
]}

Baragiola, R. A. ^{[1
]}

机构：

[1] Univ Virginia, Lab Atom & Surface Phys, Charlottesville, VA 22904 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2011年 / 738卷 / 01期

基金：

美国国家科学基金会;

关键词：

atomic processes; methods: laboratory; planets and satellites: atmospheres; planets and satellites: surfaces; radiation mechanisms: general; OUTER SOLAR-SYSTEM; HYDROGEN-PEROXIDE; ION; OXYGEN; SPECTRA; OZONE; IRRADIATION; SATELLITES; RADIOLYSIS; DYNAMICS;

D O I：

10.1088/2041-8205/738/1/L3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The mass uptake of ambient oxygen in nanoporous ice is enhanced by irradiation with 193 nm photons, due to conversion of O-2 into H2O2 and O-3, with an efficiency that increases with decreasing temperature. These findings show a new way to form H2O2 and O-3 on icy surfaces in the outer solar system at depths much larger than are accessible by typical ionizing radiation, with possible astrobiological implications.

引用

页数：6

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