Physics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9617529s&link_type=abstract
(International Conference on Laboratory Research for Planetary Atmospheres, 2nd, Charlottesville, VA, Oct. 21, 1990, Proceedings
Physics
27
Absorption Cross Sections, Acetylene, Extreme Ultraviolet Radiation, Gas Giant Planets, Photoabsorption, Planetary Atmospheres, Atmospheric Chemistry, Atmospheric Models, High Resolution, Photochemical Reactions
Scientific paper
Results of measurements of photoabsorption cross sections of acetylene at 195 and 295 K in the wavelength range of 147-201 nm are reported. Short-wavelength data are obtained at 0.002 nm intervals, but no structure was observed on that scale. Emission and absorption lines from contaminant species in xenon and hydrogen discharges are used to determine the correct wavelength scale for the data. The uncertainty in the relative wavelengths is estimated to be about 0.004 nm, whereas the absolute wavelength values are accurate to + or - 0.043 nm. No significant photodestruction of C2H2 was found during the measurements. Cross-section values determined at the beginning portions of the measurements are indistinguishable from the values determined at the ends, thus demonstrating that there was no loss of absorbers.
Ito Kenji
Parkinson William H.
Smith Peter L.
Stark Glenn
Yoshino Kouichi
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