High-resolution, temperature dependant, Fourier transform infrared spectroscopy of CF3I

Webb, S.M.; Jaksch, D.; McPheat, R.A.; Drage, E.; Vasekova, E.; Limao-Vieira, P.; Mason, N.J. and Smith, K.M. (2005). High-resolution, temperature dependant, Fourier transform infrared spectroscopy of CF3I. Journal of Quantitative Spectroscopy and Radiative Transfer, 94(3-4) pp. 425–438.

DOI: https://doi.org/10.1016/j.jqsrt.2004.09.026


CF3I is being considered as a replacement for some of the global warming gases currently used in the plasma industry, however before this compound can be put into wide-scale use the possible implications upon the atmosphere must be carefully considered. Calculations of global warming potentials of compounds require detailed information about the infrared absorption properties of a compound. High resolution Fourier transform infrared spectroscopy has been applied to CF3I to measure absolute infrared photo absorption cross-sections. These have been measured in the ranges (400-1400)cm(-1) and (1900-2500) cm(-1) at a resolution of 0.003 cm(-1) for temperatures of 208.0, 251.6, 272.9 and 299.4 K over a range of pressures. Eight absorption features were observed across the measured range some of which lie within the atmospheric IR (800-1300cm(-1)) window and hence may play a role in global warming.

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