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Formation mechanisms of oxygen atoms in the O(3PJ) state from the 157 nm photoirradiation of amorphous water ice at 90 K

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Title: Formation mechanisms of oxygen atoms in the O(3PJ) state from the 157 nm photoirradiation of amorphous water ice at 90 K
Authors: Hama, Tetsuya Browse this author
Yabushita, Akihiro Browse this author
Yokoyama, Masaaki Browse this author
Kawasaki, Masahiro Browse this author
Watanabe, Naoki Browse this author →KAKEN DB
Keywords: amorphous state
ground states
reaction kinetics
translational states
ultraviolet radiation effects
Issue Date: 21-Sep-2009
Publisher: American Institute of Physics
Journal Title: Journal of Chemical Physics
Volume: 131
Issue: 11
Start Page: 114511
Publisher DOI: 10.1063/1.3194797
Abstract: Desorption of ground state O(3P_[J= 2,1,0]) atoms following the vacuum ultraviolet photolysis of water ice in the first absorption band was directly measured with resonance-enhanced multiphoton ionization (REMPI) method. Based on their translational energy distributions and evolution behavior, two different formation mechanisms are proposed: One is exothermic recombination reaction of OH radicals, OH+OH → H2O+O(3PJ) and the other is the photodissociation of OH radicals on the surface of amorphous solid water. The translational and internal energy distributions of OH radicals as well as the evolution behavior were also measured by REMPI to elucidate the roles of H2O2 and OH in the O(3PJ) formation mechanisms. © 2009 American Institute of Physics.
Rights: Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Chem. Phys. 131, 114511 (2009) and may be found at
Type: article
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡部 直樹

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