Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...10416585s&link_type=abstract
Journal of Geophysical Research, Volume 104, Issue E7, p. 16585-16590
Physics
10
Planetology: Solar System Objects: Venus
Scientific paper
SO2 is an important constituent of the atmospheres of Io and Venus. Accurate photoabsorption cross-section data at the temperatures of these planetary atmospheres are required for the interpretation of SO2 observations and for reliable photochemical models. As part of a planned series of measurements over the 160-300 K range, photoabsorption cross sections of SO2 at 295 K, in the wavelength region 198-220 nm, have been determined from very high resolution (resolving power (λ/Δλ)~450,000) absorption spectra recorded with a vacuum ultraviolet Fourier transform spectrometer. These new measurements are compared with earlier, lower-resolution (λ/Δλ)~100,000) photoabsorption measurements at 213 K spanning the same wavelength region, with lower-resolution (λ/Δλ)~100,000) measurements at 295 K in a more limited region, and with a recent Doppler-limited laser diode measurement at 295 K over a very narrow wavelength region.
Cox Graham
Pickering Juliet C.
Rufus J.
Smith Peter L.
Stark Glenn
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