Unimolecular Reactions of Nitrites and Nitrates.
Annual rept. 1 Apr 82-31 Mar 82,
UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES
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Photodissociation of CH3ONO, C2H5ONO, and C3H7ONO have been studied using multiphoton ionization MPI to detect the NO fragment. Each of these molecules was dissociated by one photon 382-383 nm and the fragment NOX 2 Pi was excited and ionized in a subsequent 21 photon process. All events occurred within the same laser pulse duration - 7 ns, thus ensuring collision-free conditions. The MPI spectrum NO was analyzed for rotational state distributions. When compared to a room temperature spectrum of NO at 300 K, the extent of NO rotational excitation observed in CH3ONO was very large, Erot12100 cm and the distribution of NO was found to be non-thermal. C2H5ONO and C3H7ONO on the other hand, produced NO fragments which displayed a Boltzmann behavior and could be characterized by Trot equals 350 K and 250 K respectively. Author
- Radiation and Nuclear Chemistry
- Nuclear Physics and Elementary Particle Physics