Primary Processes in the Photolysis of NO2

Abstract

The quantum yield of the photolysis of NO₂ (6 Torr) under continuous irradiation has been measured in the presence of N₂ in the pressure range 0 ≤ P(N₂) ≤ 1000 atm at temperatures 296 ≤ T ≤ 428 K and wavelengths 313 ≤ λ ≤ 416 nm. The primary quantum yield is separated from the contribution of secondary reactions. The dependence of the primary quantum yield on pressure, temperature and wavelength is analyzed in terms of the specific rate constants k(E) for photolysis and detailed rate constants for collisonal energy transfer.