# THE 2.88 MICRON BAND OF FORMALDEHYDE

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 Title: THE 2.88 MICRON BAND OF FORMALDEHYDE Creators: Toth, R. A. Issue Date: 1972 Publisher: Ohio State University Abstract: Spectra of the 2$\nu_{3}$ band of formaldehyde have been obtained with high resolution ($0.035 cm^{-1}$). Measurements were made with pathlengths from 8 to 24 m and at sample pressures from 0.1 to 0.3 mm of Hg. More than 300 lines were observed and assigned for $J \leq 21$ and $K_{a} \leq 9$. From these data the following constants were determined in $cm^{-1}$: \begin{eqnarray*} \nu_{0} = 3471.718 \pm 0.004 \\ A^{\prime\prime} -A^{\prime} = 0.0117 \pm 0.0005 \\ B^{\prime} = 1.28100 \pm 0.00024 \\ C^{\prime} = 1.11662 \pm 0.00024 \end{eqnarray*} The line strengths of 150 observed transitions were also obtained from the data. The strengths were analyzed to determine the band strength and the rotational factors. At $296^{\circ} K$, the strength of the $2\nu_{3}$ band was found to be $15.7\pm 0.9 cm^{-2}$ $atm^{-1}$. This paper presents progress of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under Contract No. NAS 7-100, Sponsored by the National Aeronautics and Space Administration. Description: Author Institution: Space Sciences Division, Jet Propulsion Laboratory Pasadena URI: http://hdl.handle.net/1811/9164 Other Identifiers: 1972-W-3