Predissociation and its inverse, using resonance absorption NO(C 2Π) ⇄ N+O
1973; American Institute of Physics; Volume: 58; Issue: 1 Linguagem: Inglês
10.1063/1.1678956
ISSN1520-9032
AutoresMichael Mandelman, Tucker Carrington, Robert Young,
Tópico(s)Atmospheric chemistry and aerosols
ResumoRadiative recombination of N+O has been investigated by using this radiation as a highly specific light source for dissociation of NO. This direct proof of predissociation of NO(C 2Π) supports previous indirect evidence. Measurements of the rate of N2 production in the photodissociation lead to a rate coefficient for the process N+O ⇄ NO(C 2Π, v′ = 0) → NO(X 2Π, v″ = 0) + hν, kδ0,0 = (2.9 ± 0.5) × 10−18 cm3 sec−1 at 300°K. The total rate coefficient summed over v″ is (1.5 ± 0.4) × 10−17 cm3 sec.−1 When N and O concentrations are measured by titration, the recombination emission can be used as an absolute intensity standard (±20%) at 1900 Å.
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