Journal
CHEMICAL PHYSICS LETTERS
Volume 456, Issue 1-3, Pages 27-30Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2008.02.095
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The reactions of cold H atoms with solid O-2 molecules were investigated at 10 K. The formation of H2O2 and H2O has been confirmed by in situ infrared spectroscopy. We found that the reaction proceeds very efficiently and obtained the effective reaction rates. This is the first clear experimental evidence of the formation of water molecules under conditions mimicking those found in cold interstellar molecular clouds. Based on the experimental results, we discuss the reaction mechanism and astrophysical implications. (C) 2008 Elsevier B.V. All rights reserved.
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