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THE PRODUCTION OF ELECTRONICALLY EXCITED OXYGEN MOLECULES AND THEIR REACTIONS WITH OZONE *
Author(s) -
March R. E.,
Furnival Sharon G.,
Schiff H. I.
Publication year - 1965
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1965.tb09288.x
Subject(s) - ozone , molecule , oxygen , reaction rate constant , excited state , chemistry , linear relationship , analytical chemistry (journal) , photochemistry , oxide , atomic physics , physics , organic chemistry , kinetics , statistics , mathematics , quantum mechanics
— The only detectable emission from discharged oxygen was a band system at 7619 Å. However, when a film of mercuric oxide was interposed between the discharge and the observation position, the intensity of this band was greatly enhanced and additional bands were observed at 6340, 7030 and at 12,700 Å, in agreement with the findings of Bader and Ogryzlo. A linear relationship, however, was found between the intensities at 6340 and at 12,700 Å, instead of the quadratic dependence reported by these authors. A rapid reaction was found to occur between O 3 , and O 2 >( 1 Σ+ g ) molecules but the reappearance of the 7619 Å, emission after all the O 3 had been reacted indicates a production process of O 2 ( 1 Σ+ g ) molecules, probably from O 2 ( 1 Δ g ). The value of the rate constant for the reaction 0 2 ( 1 Σ+ g ) + O 3 →2O 2 + O is approximately 6times10 ‐13 cm 3 /molecule per sec. The rate constant for the comparable reaction with O 2 ( 1 Δ g ) molecules is probably lower than this by a factor of at leat 4.