Kinetics of O2(1Σ) formation in the reaction O2(1Δ) + O2(1Δ) → O2(1Σ) + O2(3Σ)

The dependence of the ratio of specific powers of dimole radiation of singlet oxygen in the 634 nm band and in the b — X band of the O₂(¹Σ) molecule in the O₂(X) — O₂(¹Δ) — O₂(¹Σ) — H₂O — CO₂ mixture on the CO₂ concentration is measured. As a result, the rate constant of the reaction O₂(¹Δ) + O₂(¹Δ) → O₂(¹Σ) + O₂(³Σ) at the temperature ~330 K is found to equal (4.5 ± 1.1) 10^-17 cm³ s^-1.