EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Hoell et al. 1979
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.

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.

BACKGROUND DATA FILES

Abstract

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
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
Click to clear formClick to return to previous pageClick to submit