Absorption Cross Section of Gaseous Acetylene at 85 K in the Wavelength Range 110-155 nm

Details Absorption Cross Section of Gaseous Acetylene at 85 K in the Wavelength Range 110-155 nm Absorption Cross Section of Gaseous Acetylene at 85 K in the Wavelength Range 110-155 nm

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apjs..196....3c&link_type=abstract

The Astrophysical Journal Supplement, Volume 196, Issue 1, article id. 3 (2011).

Computer Science

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Astronomical Databases: Miscellaneous, Molecular Data, Techniques: Spectroscopic, Ultraviolet: General

Scientific paper

Absorption spectra and absorption cross sections of gaseous acetylene, C2H2, at 298 and 85 K were measured in the wavelength range 110-155 nm with a slit-jet system coupled to a synchrotron as a source of vacuum ultraviolet light. Using published spectral parameters of C2H2, we simulated the absorption profile for the Rydberg transition to state 4R 0 in the range 124.6-125.1 nm, according to which the temperature of the jet-expanded sample at stagnation pressure 200 Torr is 85 ± 5 K. Our cross sections of C2H2 are applicable for determining properties sensitive to temperature for diagnostic work on Saturn and Titan.

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