MPG

The MPI-Mainz UV/VIS Spectral Atlas

of Gaseous Molecules of Atmospheric Interest

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

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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 / Halogeno-alkanes+radicals / Iodoalkanes(C,H,F,Cl,Br,I) / CH3I / Rattigan(1997)_243K_235-365nm(calc)

DATAFILE: CH3I_Rattigan(1997)_243K_235-365nm(calc).txt
NAME: iodomethane, methyl iodide
FORMULA: CH3I
AUTHOR(YEAR): Rattigan(1997)
T: 243K
λ: 235-365nm(calc)
BIBLIOGRAPHY: O.V. Rattigan, D.E. Shallcross, and R.A. Cox, "UV absorption cross-sections and atmospheric photolysis rates of CF3I, CH3I, C2H5I and CH2ICl", J. Chem. Soc. Faraday Trans. 93, 2839-2846 (1997); DOI: 10.1039/A701529A
COMMENTS: Absorption measurements at 243, 253, 263, 273, 298, 313, and 333K with a spectral resolution of 0.6nm (FWHM) using a diode array spectrometer

Calculated absorption cross sections using the values measured at 298 K, the equation

ln σ(T) = ln σ (298K) + B × (T - 298),

and the temperature coefficients B (243-333 K):

--------------------
λ   103 B
(nm) (K-1)
--------------------
235  0.67
240  0.61
245  0.34
250  0.08
255 -0.10
260 -0.12
265  0.10
270  0.54
275  1.33
280  2.43
285  3.74
290  4.98
295  6.38
300  6.97
305  6.84
310  6.78
315  6.75
320  6.53
325  6.79
330  7.82
335  9.34
340 10.95
345 13.58
350 16.83
355 18.91
360 17.28
365 23.63

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