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Infrared emission spectroscopy of CO2 at high temperature. Part II: Experimental results and comparisons with spectroscopic databases

Abstract : Measurements of CO2 emission spectra at high temperature in the 2.7 μm and 4.3 μm regions are presented and compared to predictions from the spectroscopic databases, CDSD-4000 (Tashkun SA, Perevalov VI. CDSD-4000: high-resolution, high-temperature carbon dioxide spectroscopic databank. Journal of Quantitative Spectroscopy and Radiative Transfer 2011;112:1403-10) and HITELOR (Scutaru D, Rosenmann L, Taine J. Approximate intensities of CO2 hot bands at 2.7, 4.3 and 12 μm for high temperature and medium resolution applications. Journal of Quantitative Spectroscopy and Radia- tive Transfer 1994;52:765-81). The measurements near 2.7 μm show that CDSD-4000 provides better agreement with experimental data, especially in the band wing corresponding to very hot band emission. In the 4.3 μm region, experimental intensities are generally lower than theoretical predictions but the measurements are more affected by the use of sapphire confinement tubes. The two spectroscopic databases provide closer results than in the 2.7 μm region although CDSD-4000 yields here also better agreement with experimental data in band wing. Analysis of the two spectro- scopic databases is carried out in terms of vibrational and rotational energy cutoff and total band emissivities.
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Sébastien Depraz, Marie-Yvonne Perrin, Philippe Rivière, Anouar Soufiani. Infrared emission spectroscopy of CO2 at high temperature. Part II: Experimental results and comparisons with spectroscopic databases. Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2011, 113, pp.14-25. ⟨10.1016/j.jqsrt.2011.09.013⟩. ⟨hal-00644850⟩

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