Line positions from high temperature isotopically enriched CO2 in the 740 to 1060 cm-1 region

Mark P. Esplin

doi:10.1117/12.166649

31 January 1994 Line positions from high temperature isotopically enriched CO₂ in the 740 to 1060 cm^-1 region

Mark P. Esplin

Proceedings Volume 2089, 9th International Conference on Fourier Transform Spectroscopy; (1994) https://doi.org/10.1117/12.166649
Event: Fourier Transform Spectroscopy: Ninth International Conference, 1993, Calgary, Canada

Abstract

A high resolution step-and-hold Fourier transform spectrometer has been used to observe the spectrum of CO₂ samples heated to 800 K in a high temperature absorption cell. The interferograms were recorded using a maximum optical path difference of 152 cm resulting in an apodized spectral resolution of 0.007 cm^-1. The 20 torr isotopically enriched CO₂ sample consisted of 88% ¹³C¹⁶O₂ and 11% ¹⁶O¹³C¹⁸O. The sample was contained in a single pass high temperature absorption cell with a total absorption path length of 1.75 meters. A total of 1601 lines belonging to 15 rotation-vibration bands of ¹³C¹⁶O₂ and 146 lines belonging to two bands of ¹⁶O¹³C¹⁸O were identified in the observed spectrum. A weighted least-squares fit was then used to obtain improved estimates of the band centers and rotational constants.

Citation Download Citation

Mark P. Esplin "Line positions from high temperature isotopically enriched CO₂ in the 740 to 1060 cm^-1 region", Proc. SPIE 2089, 9th International Conference on Fourier Transform Spectroscopy, (31 January 1994); https://doi.org/10.1117/12.166649

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