The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

www.uv-vis-spectral-atlas-mainz.org

Hannelore Keller-Rudek1, Geert K. Moortgat2, Rolf Sander2, Rüdiger Sörensen1

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany

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When referring to the Spectral Atlas, please cite our publication:

Keller-Rudek, H., Moortgat, G. K., Sander, R., and Sörensen, R.: The MPI-Mainz UV/VIS spectral atlas of gaseous molecules of atmospheric interest, Earth Syst. Sci. Data, 5, 365–373, (2013), DOI: 10.5194/essd-5-365-2013

Cross Sections / Alkynes,polyynes+radicals / Polyynes / C4H2 / GlickerOkabe(1987)_298K_185,229,254nm

DATAFILE: C4H2_GlickerOkabe(1987)_298K_185,229,254nm.txt
NAME: diacetylene, butadiyne
FORMULA: C4H2
AUTHOR(YEAR): GlickerOkabe(1987)
T: 298K
λ: 185,229,254nm
BIBLIOGRAPHY: S. Glicker and H. Okabe, "Photochemistry of diacetylene", J. Phys. Chem. 91, 437-440 (1987); DOI: 10.1021/j100286a036
COMMENTS: HC≡CC≡CH

High-pressure xenon lamp as a light source; a single beam was used to obtain the absorption coefficients of C4H2 between 183 and 260 nm; spectral resolution 0.1 nm (FWHM)

Selected values for the absorption coefficients k (atm, 298K)-1 cm-1 (base e) from Table I have been converted to absorption cross sections (conversion factor 4.06×10-20)

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