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Collision‐induced emission of O 2 ( b 1 Σ g + → a 1 Δ g ) in the gas phase
Author(s) -
Fink E. H.,
Setzer K. D.,
Wildt J.,
Ramsay D. A.,
Vervloet M.
Publication year - 1991
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560390307
Subject(s) - chemistry , quadrupole , atomic physics , quenching (fluorescence) , collision , gas phase , emission spectrum , analytical chemistry (journal) , oxygen , range (aeronautics) , spectral line , materials science , physics , fluorescence , optics , computer security , organic chemistry , chromatography , astronomy , computer science , composite material
In flow tube studies of the quenching of O 2 ( b 1 Σ g + ), broad band emission of O 2 ( b ): M collision complexes was found to appear under the discrete rotational lines of the 0–0 band of the b 1 Σ g +→ a 1 Δ g electric quadrupole transition at higher oxygen pressures and on addition of foreign gases. Bimolecular rate constants for the collision‐induced emission processes have been derived from the ratio of the intensities of the discrete lines and the continuum as well as from low‐resolution measurements of the relative intensities of the b → a and b → X bands as a function of O 2 and added gas pressure. They range from ≈10 −21 cm 3 s −1 for He to ≈4 × 10 −19 cm 3 s −1 for PCl 3 vapor.