4000-8000-Å Emission from Far-Ultraviolet Photolysis of N2O, NO, NO2, CO, CO2, and O2

Publisher Website
Google Scholar
Abstract
Luminescence has been observed in the 4000-8000-Å region during the uv photolysis of a number of simple gases with Ar, Kr, and Xe resonance lamps. CO and NO photolyzed at 1470 Å give fluorescence spectra, emission being produced from the d3Δυ = 7 state of CO and from a number of little-known upper states of NO. CO2 photolysis gives the 5577-Å line of O(1S) at all wavelengths from 1048 to 1470 Å; at the longer wavelengths the O(1S) is formed in a secondary process, as there is insufficient energy available during the initial dissociation. The N2O photolysis produces the N2 first positive bands, the NO β bands, and O(1S), depending on the photolyzing wavelength. In O2 photolysis, the only emitting species is O2(b1Σg+), presumably formed during O(1D) deactivation.