✦ LIBER ✦

Temperature-dependence of ultraviolet absorption cross-sections of alternative chlorofluoroethanes: 2. The 2-chloro-1,1,1,2-tetrafluoro ethane -HCFC-124

✍ Scribed by Didier Gillotay; Baul C. Simon

Publisher: Springer Netherlands
Year: 1991
Tongue: English
Weight: 633 KB
Volume: 13
Category: Article
ISSN: 0167-7764
DOI: 10.1007/bf00058136

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✦ Synopsis

The temperature-dependent ultraviolet absorption cross-sections of CF,-CHFCl (HCFC-124) have been measured between 170 and 230 nm for temperatures ranging from 295 to 210 K, with uncertainties between 2 and 4%. These results are compared with other available sets of determinations. Temperature effects are discussed and the photodissociation coefficients, presented with their temperature dependence, are calculated. Implication of the temperature dependences on the stratospheric chemistry is also discussed. Parametrical formulae are proposed to compute absorption crosssection values for wavelengths and temperatures useful in modelling calculations.

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