Infrared detection of HO2 and HO3 radicals in water ice

被引：48

作者：

Cooper, Paul D.

Moore, Marla H.

Hudson, Reggie L.

机构：

[1] NASA Goddard Space Flight Ctr, Astrochem Branch, Greenbelt, MD 20771 USA

[2] Eckerd Coll, Dept Chem, St Petersburg, FL 33711 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2006年 / 110卷 / 26期

关键词：

D O I：

10.1021/jp062765k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Infrared spectroscopy has been used to detect HO2 and HO3 radicals in H2O + O-2 ice mixtures irradiated with 0.8 MeV protons. In these experiments, HO2 was formed by the addition of an H atom to O-2 and HO3 was formed by a similar addition of H to O-3. The band positions observed for HO2 and HO3 in H2O-ice are 1142 and 1259 cm(-1), respectively, and these assignments were confirmed with O-18(2). HO2 and HO3 were also observed in irradiated H2O + O-3 ice mixtures, as well as in irradiated H2O2 ice. The astronomical relevance of these laboratory measurements is discussed.

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页码：7985 / 7988

页数：4

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