We present preliminary results of resonant (2 + 2) multiphoton ionization of NO in flames near 452 nm. Temperature profiles are obtained from Boltzmann analysis and from spectral simulations of the resonance-enhanced multiphoton ionization (REMPI) rotational spectra of the NO A2÷←X2∏ (0,0) band. Interest in this work was encouraged by previous REMPI flame studies of NO1,2, as well as by possible problems that may be encountered in NO2 flames using laser λ < 405 nm which may perturb the probe volume by photolysis of NO2 (readily photolyzed at λ < 405 nm).3 Clearly, LIF of NO around 220 nm, O-atom LIF near 226 nm4, and OH LIF flame thermometry near 300 nm may be affected by NO2 photolysis. Therefore, development of a method for NO detection as well as for flame thermometry requiring laser λ > 405 nm would be very desirable.

© 1991 Optical Society of America

PDF Article
More Like This
Laser-based spectroscopic studies and chemical modeling of CH4/O2/Ar and C2H4/O2/Ar low-pressure flames

R. C. Sausa, S. L. Howard, R. J. Locke, A. J. Kotlar, A. W. Miziolek, J. S. Bernstein, J. B. Choi, and T. A. Cool
QTuC4 Quantum Electronics and Laser Science Conference (QELS) 1991

Laser-based spectroscopic studies of H2/NO2 low-pressure flames

R. C. Sausa, S. L. Howard, A. J. Kotlar, and A. W. Miziolek
CThR44 Conference on Lasers and Electro-Optics (CLEO) 1991

2 + 1 resonance-enhanced multiphoton ionization spectroscopy of the difluoromethyl radical

J. W. Hudgens, D. V. Dearden, R. D. Johnson, and B. P. Tsai
QMA2 Quantum Electronics and Laser Science Conference (QELS) 1991


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription