High-resolution, temperature dependant, fourier transform infrared spectroscopy of CF sub(3)I

• Published in: Journal of quantitative spectroscopy & radiative transfer 2005-09, Vol.94 (3-4), p.425-438
• Main Authors: Webb, S M, Jaksch, D, McPheat, R A, Drage, E, Vasekova, E, Limao-Vieira, P, Mason, N J, Smith, K M
• Format: Article
• Language: English
• ISSN: 0022-4073
• DOI: 10.1016/j.jqsrt.2004.09.026

CF sub(3)I 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 CF sub(3)I to measure absolute infrared photo absorption cross- sections. These have been measured in the ranges (400-1400) cm super(-1) and (1900- 2500) cm super(-1) at a resolution of 0.003 cm super(-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 (800-1300 cm super(-1)) window and hence may play a role in global warming.