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Investigation of Collision-Induced Absorption in the Fundamental Bands of O2 and N2 at Elevated Temperatures



Y Baranov, Walter J. Lafferty, Gerald T. Fraser


The NIST high-pressure multi-pass White absorption cell has been modified for use in high temperature studies. The temperature range of this cell is now -90o C to +90oC. Collision-induced absorption (CIA) of O2 and N2 has now been studied at temperatures up to 90o C. The CIA band intensity of O2 has been found to come to a minimum around 270 K and very surprisingly increases as the temperature is raised. In the case of N2 gas, the band intensity has a much smaller temperature dependence.
Journal of Molecular Spectroscopy


fourier-transform-jet spectrum, high resolution IR spectrum, molecular beam, propene, torsional splitting


Baranov, Y. , Lafferty, W. and Fraser, G. (2007), Investigation of Collision-Induced Absorption in the Fundamental Bands of O<sub>2</sub> and N<sub>2</sub> at Elevated Temperatures, Journal of Molecular Spectroscopy (Accessed December 3, 2023)
Created October 14, 2007, Updated October 12, 2021