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 / Halogeno-alkanes+radicals / Bromoalkanes / CH2Br2 / Mossinger(1998)_328K_215-300nm(calc)

DATAFILE: CH2Br2_Mossinger(1998)_328K_215-300nm(calc).txt
NAME: dibromomethane
FORMULA: CH2Br2
AUTHOR(YEAR): Mossinger(1998)
T: 328K
λ: 215-300nm(calc)
BIBLIOGRAPHY: J.C. Mössinger, D.E. Shallcross, and R.A. Cox, "UV-VIS absorption cross-sections and atmospheric lifetimes of CH2Br2, CH2I2, and CH2BrI", J. Chem. Soc. Faraday Trans. 94, 1391-1396 (1998); DOI: 10.1039/A709160E
COMMENTS: Absorption measurements at 250 to 348 K using a dual-beam diode array spectrometer (spectral resolution ∼0.6 nm)

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 (273-348 K):

---------------------
λ   103 B
(nm) (K-1)
----------------------
215 -2.02
220 -1.79
225 -1.50
230 -0.96
235 -0.04
240  0.71
245  1.80
250  2.70
255  3.91
260  5.16
265  6.33
270  7.75
275  8.74
280 11.6
285 13.8
290 15.3
295 16.5
300 21.9

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