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 / Halogen oxides / I oxides / IO / Atkinson(1999)_295K_445,455nm

DATAFILE: IO_Atkinson(1999)_295K_445,455nm.txt
NAME: iodine monoxide
FORMULA: IO
AUTHOR(YEAR): Atkinson(1999)
T: 295K
λ: 445,455nm
BIBLIOGRAPHY: D.B. Atkinson, J.W. Hudgens, and A.J. Orr-Ewing, "Kinetic studies of the reactions of IO radicals determined by cavity ring-down spectroscopy", J. Phys. Chem. A 103, 6173-6180 (1999); DOI: 10.1021/jp9902497
COMMENTS: 445.04 nm: A 2Π3/2← X 2Π3/2 (2, 0) band head
455.17 nm: A 2Π3/2← X 2Π3/2 (1, 0) band head

Measurement of the (2, 0) and (1, 0) bands using cavity ring-down spectroscopy (CRDS), resolution 0.0013 nm; the (2, 0) spectrum was convoluted to a resolution of 0.7 nm fwhm and 1.2 nm full width and normalized to the value 1.05×10-17 cm2 molecule-1 measured by

B. Laszlo, M.J. Kurylo, and R.E. Huie, "Absorption cross sections, kinetics of formation, and self-reaction of the IO radical produced via laser photolysis of N2O/I2/N2 mixtures," J. Phys. Chem. 99, 11701-11707 (1995).

The absorption cross section of the (1, 0) band head was determined from the ratio 0.1 ± 0.01 of the absorbance maxima of the (2, 0) and (1, 0) bands

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