ChemInform Abstract: Ultraviolet—Visible Absorption Cross Sections of Gaseous HOI and Its Photolysis at 355 nm.
✍ Scribed by D. BAUER; T. INGHAM; S. A. CARL; G. K. MOORTGAT; J. N. CROWLEY
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 32 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
Ultraviolet-Visible Absorption Cross Sections of Gaseous HOI and Its Photolysis at 355 nm.
-HOI is generated in situ by laser photolytic production of OH in the presence of I 2 . The absorption cross sections of HOI are obtained at room temp. between 280 and 490 nm. The absorption spectrum consists of two unstructured bands with maxima at 340.0 and 406.4 nm. From the cross section data HOI lifetimes are calculated with respect to photodissociation in the troposphere of between 170 and 100 s for solar zenith angles of 70 • and 30 • , respectively. The photolysis of HOI is investigated at 355 nm and is found to generate OH radicals with a quantum yield close to unity.
-(BAUER, D.; INGHAM, T.; CARL, S.