The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

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

1Satellite Group

2Atmospheric Chemistry Division

Max-Planck Institute for Chemistry
Mainz, Germany


Cross Sections

Quantum Yields


Contact, Imprint, Acknowledgements

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 / Organics (carbonyls) / Ketones,ketenes / C2H5C(O)C2H5 / Brewer(2019)_296K_200-335nm

DATAFILE: C2H5C(O)C2H5_Brewer(2019)_296K_200-335nm.txt
NAME: diethyl ketone, 3-pentanone
AUTHOR(YEAR): Brewer(2019)
T: 296K
λ: 200-335nm
BIBLIOGRAPHY: J.F. Brewer, D. K. Papanastasiou, J. B. Burkholder, E. V. Fischer, Y. Ren, A. Mellouki, and A. R. Ravishankara, "Atmospheric photolysis of methyl ethyl, diethyl, and propyl ethyl ketones: Temperature‐dependent UV absorption cross sections", J. Geophys. Res. Atmospheres 124, 5906-5918 (2019) DOI: 10.1029/2019JD030391
COMMENTS: Absorption measurements (1-nm resolution, 242-320 K) using a D2 lamp and a spectrometer/CCD (charge‐coupled device) detector set-up

The authors provide an expression to calculate cross sections (230-335 nm) at different temperatures, σ(λ,T), using a two-state model (σ0 for electronic excitation from ground state and σ1 representing the cross sections for electronic excitation from the first vibrational state of the C=O vibration). The expression, which was validated with their experimental data, is as follows:

σ(λ,T) = X0σ0 + X1σ1,

where X0 = (1+exp (-2474.696/T))-1, X1 = 1- X0 and T is the temperature in Kelvin

The absorption cross sections σ, σ0, and σ1 have been downloaded from the "Supporting Information" published along with the online version of the article

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