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Detailed Reference Information |
Hoell, J.M., Bair, C.H., Harward, C. and Williams, B. (1979). High resolution absorption coefficients for Freon-12. Geophysical Research Letters 6: doi: 10.1029/GL006i011p00837. issn: 0094-8276. |
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Ultra high resolution absorption coefficients of the Q-branch of Freon-12 (CCl2F2) have been obtained using tunable diode laser spectroscopy. Continuous spectra are presented from 1155 cm-1 to 1163 cm-1 with a spectral resolution ~.001 cm-1. Absolute wavelength calibration was obtained using SO2 spectra as a standard and a 5 cm Ge etalon for relative calibration between SO2 lines. The relative accuracy of the Freon-12 line positions was ~.0005 cm-1. The Freon-12 data, obtained at a pressure of .05 Torr, exhibited a rich and highly structured spectra. However, with the exception of three isolated features at 1158.2, 1159, and 1161 cm-1, collisional broadening reduces the spectra to a structureless continuum for nitrogen pressures greater than 20 Torr. The spectra at 1161 cm-1 continue to exhibit structure at atmospheric pressure. |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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