# PHOTOACOUSTIC DETECTION OF $CO_{2}$ AND $N_{2}O$ OVERTONE TRANSITIONS IN THE NEAR INFRARED

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 Title: PHOTOACOUSTIC DETECTION OF $CO_{2}$ AND $N_{2}O$ OVERTONE TRANSITIONS IN THE NEAR INFRARED Creators: Yang, Xiaoke; Noda, C. Issue Date: 1992 Publisher: Ohio State University Abstract: The vibrational overtone spectra of gaseous $CO_{2}$ and $N_{2}O$ were obtained by laser photoacoustic method between 700 and 800 nm. The transitions include $(0, 2^{0}, 5)-(0. 0^{0}. 0). (1, 0^{0}, 5) - (0, 0^{0}, 0)$ for $CO_{2}^{1}$ and $(6, 2^{0}, 2) - (0, 0^{0}, 0), (0. 1^{1}, 6) - (0. 1^{1}. 0). (0, 0^{0}, 0)(0, 0^{0}, 0)$ for $N_{2}O_{2}$. The $(1, 0^{0}, 5) - (0, 0^{0}, 0)$ transition of $CO_{2}$ and the $(0, 0^{0}, 6) - (0, 0^{0}, 0)$ transition of $N_{2}O$ have well-defined structures and show no significant perturbation. By comparing the integrated band intensities of water in the same spectral range to that of $CO_{2}$ (or $N_{2}O$) and from the knowledge of absorption intensities of water, the absolute absorption intensities were determined. Description: $^{1}$. A. Adel and D. M. Dennison, Phys. Review 43, 716 (1933) $^{2}$. G. Herzberg and L. Herzberg, J. Chem. Phys. 18, 1551 (1950) Author Institution: Department of Chemistry, University of New Hampshire URI: http://hdl.handle.net/1811/12688 Other Identifiers: 1992-ME-16