Measurements of the infrared absorption cross-sections of HCFC-141b (CH _3CFCl _2)

摘要

Detection of atmospheric trace gases by optical remote sensing techniques relies on the availability of molecular absorption spectra over a range of relevant temperatures. Absorption cross-sections of a pure vapour of the hydrochlorofluorocarbon HCFC-141b are reported at a resolution of 0.02cm ~(-1) for a range of temperatures between 223 and 283K and a spectral range of 570-3100cm ~(-1). The integrated intensities of the nine main harmonic bands compare well with the data available from previous experimental studies and with theoretical calculations by ab initio and density functional theories.