MEASUREMENTS OF SELF-BROADENING OF OZONE ABSORPTION LINES
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Date
1991
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Self-broadened halfwidths at room temperature have been determined for 355 spectral lines of five different vibration-rotation bands of $^{16}O_{3}$ in the 4.8-17 $\mu m$ region $(v_{2}, v_{1}, v_{2} +v_{3}, v_{1} +v_{3},$ and $2v_{3})^{1}$. These results were obtained from absorption spectra recorded at $0.005 cm^{-1}$ resolution using the McMath Fourier transform spectrometer at the National Solar Observatory on Kitt Peak. The halfwidth values were obtained through a nonlinear last-squares spectral fitting procedure. The resulting self-broadening coefficients lie within the range of 0.08 to $0.12 cm^{-1}atm^{-1}$ and are in good agreement with most of the previous measurements. No significant differences were observed between halfwidths of lines with the same J"" and $K_{a}$"" quantum numbers from band to band or from branch to branch within a band. The present study covers a sufficiently wide range of rotational quantum numbers (J"" up to 48, $K_{a}$"" up to 13) to permit a detailed examination of the variation of the ozone self-broadening coefficient with these quantum numbers.
Description
$^{1}$M. A. H. Smith, C. P. Rinsland, and V. Malathy Devi, J. Mol. Spectrosc. 147, in press (1991).""
Author Institution: Atmospheric Sciences Division, NASA Langley Research Center; Atmospheric Sciences Division, NASA Langley Research Center; Physics Department, The College of William and Mary
Author Institution: Atmospheric Sciences Division, NASA Langley Research Center; Atmospheric Sciences Division, NASA Langley Research Center; Physics Department, The College of William and Mary