The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

https://www.uv-vis-spectral-atlas-mainz.org, https://uvvis.mpch-mainz.gwdg.de

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 / Alkynes / C2H2 / Zabeti(2017)_1500K_218nm(max)

DATAFILE: C2H2_Zabeti(2017)_1500K_218nm(max).txt
NAME: acetylene, ethyne
FORMULA: C2H2
AUTHOR(YEAR): Zabeti(2017)
T: 1500K
λ: 218nm(max)
BIBLIOGRAPHY: S. Zabeti, M. Fikri, and C. Schulz, "Ultraviolet absorption and laser-induced fluorescence of shock-heated acetylene", Proc. Combust. Inst. 36, 4469-4475 (20179; DOI: 10.1016/j.proci.2016.05.018
COMMENTS: Absorption measurements behind reflected shock-waves at 565-1500 K using a D2 lamp as a light source

Absorption maximum

The absorption spectra as a function of temperature at 200-300 nm and 230-280 nm are shown in Figs 1 and 2, respectively

Parameterization of the temperature dependence for 930-1500 K and 230-280 nm:

ln σ = a + bλ + cλ2 with

a = d1 + d2T + d3/T
b = e1 + e2T + e3/T
c = f1 + f2T + f3/T

Coefficients di, ei, and fi from Table 1:
----------------------------------------------------------------------------------------
i    1         2         3
-----------------------------------------------------------------------------------------
di   −419.09034     0.12907       406705.93713
ei    3.52772     -0.00107       -3335.33186
fi    -0.00726       2.19766x10-6     6.64674

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