Air- and oxygen-broadening coefficients for the O2 rotational line at 60.46/cm

Details Air- and oxygen-broadening coefficients for the O2 rotational line at 60.46/cm Air- and oxygen-broadening coefficients for the O2 rotational line at 60.46/cm

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987georl..14..722j&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 14, July 1987, p. 722-725.

Physics

9

Air, Emission Spectra, Infrared Lasers, Laser Spectrometers, Oxygen Spectra, Spectral Line Width, Abundance, Carbon Dioxide Lasers, Line Of Sight, Tunable Lasers, Waveguide Lasers

Scientific paper

Using an NBS laser-based tunable far-infrared spectrometer, the air- and oxygen-broadening coefficients were measured for the J = 10 - 10, N = 11 - 9 O2 rotational transition at 60.46/cm (1.812 THz). The air-broadening coefficient is 5.04 + or - 0.38 x 10 to the -7th/cm/Pa (0.0511 + or - 0.0039/cm/atm) (HWHM) at 245 + or - 6 K; the oxygen-broadening coefficient is 4.92 + or - 0.47 x 10 to the -7th/cm/Pa (0.0499 + or - 0.0048/cm/atm) (HWHM) at 259 + or -2 K. These direct experimental measurements of the air-broadening coefficient should improve the accuracy of retrieval calculations for far-infrared stratospheric balloon experiments which use O2 rotational lines to calibrate the viewing geometry.

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