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High-resolution, VUV (147-201 nm) photoabsorption cross sections for C2H2 at 195 and 295 KResults 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.
Document ID
19910070166
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smith, Peter L.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Yoshino, Kouichi
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Parkinson, W. H.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Ito, Kenji
(National Laboratory for High Energy Physics Tsukuba, Japan)
Stark, Glenn
(Wellesley College MA, United States)
Date Acquired
August 14, 2013
Publication Date
September 25, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
91A54789
Funding Number(s)
CONTRACT_GRANT: NAGW-1400
Distribution Limits
Public
Copyright
Other

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