1. D atom loss in the photodissociation of the DNCN radical: Implications for prompt NO formation.
- Author
-
Szpunar, David E., Faulhaber, Ann Elise, Kautzman, Kathryn E., Crider, Paul E., and Neumark, Daniel M.
- Subjects
- *
PHOTODISSOCIATION , *SPECTRUM analysis , *ELECTRONIC excitation , *DECAY schemes (Radioactivity) , *NITROGEN oxides - Abstract
The photodissociation of DNCN following excitation of the C 2A″←X 2A″ electronic transition was studied using fast beam photofragment translational spectroscopy. Analysis of the time-of-flight distributions reveals a photodissociation channel leading to D+NCN competitive with the previously observed CD+N2 product channel. The translational energy distributions describing the D+NCN channel are peaked at low energy, consistent with internal conversion to the ground state followed by statistical decay and the absence of an exit barrier. The results suggest a relatively facile pathway for the reaction CH+N2→H+NCN that proceeds through the HNCN intermediate and support a recently proposed mechanism for prompt NO production in flames. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF