Collision-induced emission of singlet oxygen in the visible spectral region at temperatures of 90–315 K

Collision-induced emission of singlet oxygen molecules is studied using spectrometers calibrated for absolute spectral sensitivity. The collision-induced emission-rate constants at wavelengths of 479, 514, 577, 634, and 703 nm are determined within the temperature range 90–315 K. It is found that th...

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Bibliographic Details
Published in:Optics and spectroscopy 2014-04, Vol.116 (4), p.542-547
Main Authors: Zagidullin, M. V., Svistun, M. I., Khvatov, N. A., Insapov, A. S.
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Spectroscopy of Atoms and Molecules
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Summary:Collision-induced emission of singlet oxygen molecules is studied using spectrometers calibrated for absolute spectral sensitivity. The collision-induced emission-rate constants at wavelengths of 479, 514, 577, 634, and 703 nm are determined within the temperature range 90–315 K. It is found that the intensities of the emission bands increase with decreasing temperature below 100 K. The interrelation between the collision-induced emission-rate constants and the intensities of the collision-induced absorption bands is discussed. The Einstein coefficients for spontaneous emission of excited free O 2 : O 2 complexes are estimated.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X14040262