Temperature-Dependence of Ultraviolet Absorption Cross-Sections of Alternative Chlorofluoroethanes: 2. The 2-chloro-1,1,1,2-tetrafluoro ethane -HCFC-124
Earth and related Environmental sciences
absorption cross section
ultraviolet cross section
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The temperature-dependent ultraviolet absorption cross-sections of CF3-CHFCI (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.
CitationGillotay, D.; Simon, P.C. (1991). Temperature-Dependence of Ultraviolet Absorption Cross-Sections of Alternative Chlorofluoroethanes: 2. The 2-chloro-1,1,1,2-tetrafluoro ethane -HCFC-124. , Journal of Atmospheric Chemistry, Vol. 13, Issue 3, 289-299, DOI: 10.1007/BF00058136.