Direct Observation of OH Radicals Ejected from Water Ice Surface in the Photoirradiation of Nitrate Adsorbed on Ice at 100 K

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• 作者：Akihiro Yabushita ; Daisuke Iida ; Tetsuya Hama ; Masahiro Kawasaki
• 刊名：Journal of Physical Chemistry A
• 出版年：2008
• 出版时间：October 9, 2008
• 年：2008
• 卷：112
• 期：40
• 页码：9763-9766
• 全文大小：141K
• 年卷期：v.112,no.40(October 9, 2008)
• ISSN：1520-5215

文摘

Production of gaseous OH radicals in the 248−350 nm photoirradiation of NO₃⁻ doped on amorphous ice at 100 K was monitored directly by using resonance-enhanced multiphoton ionization. The translational energy distribution of the OH product was represented by a Maxwell−Boltzmann energy distribution with the translational temperature of 3250 ± 250 K. The rotational temperature was estimated to be 175 ± 25 K. We have confirmed that the OH production should be attributed to the secondary photolysis of H₂O₂ produced on ice surface on the basis of the results of controlled photolysis experiments for H₂O₂ doped on ice surface.