We report argon-broadened water vapor transition parameters and their temperature dependence based on measured spectra spanning 6801-7188 cm from a broad-bandwidth, high-resolution dual frequency comb spectrometer. The 25 collected spectra of 2% water vapor in argon ranged from 296 K to 1305 K with total pressure spanning 100 Torr to 600 Torr. A multispectrum fitting routine was used in conjunction with a quadratic speed-dependent Voigt profile to extract broadening and shift parameters, and a power-law temperature-dependence exponent for both. The measurements represent the first broad bandwidth, argon-broadened water vapor absorption study, and are an important step toward a foreign-gas-perturbed, high-temperature database developed using advanced lineshape profiles.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7479754 | PMC |
| http://dx.doi.org/10.1016/j.jqsrt.2018.05.040 | DOI Listing |
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