Physics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9617493m&link_type=abstract
(International Conference on Laboratory Research for Planetary Atmospheres, 2nd, Charlottesville, VA, Oct. 21, 1990, Proceedings
Physics
2
Acetylene, Atmospheric Composition, Gas Giant Planets, Planetary Atmospheres, Least Squares Method, Satellite Atmospheres, Spectral Resolution, Spectrum Analysis, Vibrational Spectra
Scientific paper
The presence of acetylene has been confirmed for some time in the atmospheres of the outer planets Jupiter, Saturn, Neptune, and Saturn's satellite Titan. For these atmospheres, the determination of C2H2 abundances using its strong nu5 fundamental requires laboratory line position and intensity measurements. The 1-m Fourier transform spectrometer at McMath solar telescope of Kitt Peak National Observatory was used to measure C2H2 at an unapodized spectral resolution of 0.0025/cm. Synthetic spectra are generated by convolving a Voigt line shape with an instrument function and varying intensity parameters by means of a nonlinear least squares technique. Intensities of 37 nu5 lines spanning P18 through R20 were measured using 0.123 torr of gas in a 1-cm cell. A Herman-Wallis intensity correction parameter of 1.3(4) x 10 to the -3rd has been derived using a least squares linear fit.
Blass William E.
Hillman John J.
Maguire William C.
Weber Mark
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