Rate constant measurements at constant temperature by the flash photolysis-resonance fluorescence technique and recombination-dissociation theory for NO2 and NOCl

The flash photolysis-resonance fluorescence (FP-RF) technique for directly measuring thermal rate constants is discussed. Specific consideration is given to experimental accuracy with due regard to systematic and random errors. Data for the recombination and dissociation reactions, O + NO + M in equilibrium NO2 + M and Cl + NO + M in equilibrium NOCl + M, are reviewed. Theoretical calculations, which are based on the recent theory of Troe, are presented for these two systems. A modification of this theory is presented and tested with the same two systems. 3 figures, 3 tables