Infra-red laser enhanced reactions: chemistry of vibrationally excited O3 with NO and O2(1Δ)

摘要: Abstract Vibrationally excited ozone, produced by absorption of CO2 laser radiation, was found to react significantly faster with NO and O2(1Δ) than thermal ozone. Using a modulation technique, absolute relative rate constants at 300K for the following reactions were calculated assuming rapid equilibration between three closely spaced vibrationally levels O3, that only lowest level these, ν2 bending mode, is active in reaction. k1′ + k2′ = 2.7 × 10−13 cm3 molecule−1 s−1; (k1′ k2′)/(k1 k2) 16.2 ± 4.0; k1′/k1 4.1 2.0; k2′/k2 17.1 4.3; k7′/k7 38 20. These must be modified if different combination involved. The fraction vibrational energy usable chemical reaction about 15, 50 ∼ 100% respectively processes 1′, 2′ 7′. Our measurements clearly differentiate participation but do not distinguish differences individual states. Details involving chemiluminescence detection NO2 resonance fluorescence oxygen atoms, are described. Comparison our results previous measurement summation (1′ 2′) shows excellent agreement.