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 / Alkenes,polyenes+radicals / Polyenes / CH2=C(CH3)C(CH3)=CH2 / Cias(2007)_293K_1651.52nm

DATAFILE: CH2=C(CH3)C(CH3)=CH2_Cias(2007)_293K_1651.52nm.txt
NAME: 2,3-dimethyl-1,3-butadiene
FORMULA: CH2=C(CH3)C(CH3)=CH2
AUTHOR(YEAR): Cias(2007)
T: 293K
λ: 1651.52nm
BIBLIOGRAPHY: P. Cias, C. Wang, and T. Dibble, "Absorption cross-sections of the C–H overtone of volatile organic compounds: 2-methyl-1,3-butadiene (isoprene), 1,3-butadiene, and 2,3-dimethyl-1,3-butadiene", Appl. Spectrosc. 61, 230-236 (2007); DOI: 10.1366/000370207779947440
COMMENTS: A method is proposed to determine the unknown NIR absorption cross-sections using the known absorption cross-sections in the UV region, in which single-path UV absorption spectroscopy and NIR continuous wave cavity ringdown spectroscopy (cw-CRDS) are employed in a cross-arm reaction chamber for simultaneous measurements

This method applied for isoprene has been used as a pressure calibration means for the reaction chamber and has been demonstrated with the measuement of the NIR absorption cross section of 2.3-dimethyl-1,3-butadiene

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