High‐pressure range of the recombination O + O2 → O3

Abstract
The recombination reaction O + O2 → O3 was studied by laser flash photolysis of pure O2 in the pressure range 3–20 atm, and of N2OO2 mixtures in the bath gases Ar, N2, (CO2, and SF6) in the pressure range 3–200 atm. Fall‐off curves of the reaction have been derived. Low‐pressure rate coefficients were found to agree well with literature data. A high‐pressure rate coefficient of k = (2.8 ± 1.0) × 10−12 cm3 molecule−1 s−1 was obtained by extrapolation.

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