Characterization of Chemical Sources of N2(A3 sigma Summation of sub + u)

Abstract

Abstract : The C2N2-O2 system has been examined as a source of N(2D) and N2(A3 sigma u) with application to an energy transfer chemical laser. Both flowing afterglow and pulsed photodissociation techniques have been used to generate the CN radicals that initiate the chemical generation steps. Laser-induced fluorescence techniques have been used to monitor CN, NCO, and N2(A3 sigma u). The resonance-enhanced multiphoton ionization (REMPI) technique was developed for N(2D). During this work, vibrationally excited nitrogen was also characterized by its REMPI signals, and two-photon dissociation of both NO and N2O were discovered as sources of N(2D). The REMPI technique was then applied to the C2N2-O2 system, in which the presence of N(2d) was demonstrated and its temporal profile measured. Nitrogen, Chemiluminescence, Resonance enhanced, Multiphoton ionization technique.