Quenching-independent fluorescence measurements of atomic hydrogen with photoionization controlled-loss spectroscopy

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Opt. Lett.; (United States)

DOI:https://doi.org/10.1364/OL.11.000419· OSTI ID:5392257

Salmon, J T; Laurendeau, N M

Quenching-independent fluorescence by atomic hydrogen has been measured with photoionization controlled-loss spectroscopy (PICLS) in stoichiometric and fuel-rich premixed H/sub 2//O/sub 2//N/sub 2/ flames at a pressure of 20 Torr. These measurements are compared with conventional fluorescence measurements in the same flames. When matched in the postflame zone, the two sets of measurements diverge in the preheat zone between the burner surface and the peak of the fluorescence profiles. This divergence, caused by changes in the local quenching rate coefficient, shows the utility of PICLS for determining the kinetics of atomic hydrogen in the preheat zone.

• Research Organization: Flame Diagnostics Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907
• OSTI ID: 5392257
• Journal Information: Opt. Lett.; (United States), Journal Name: Opt. Lett.; (United States) Vol. 11:7; ISSN OPLED
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
400500 -- Photochemistry
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMISTRY
COMBUSTION PRODUCTS
ELEMENTS
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HYDROGEN
IONIZATION
KINETICS
NITROGEN
NONMETALS
OXYGEN
PHOTOCHEMISTRY
PHOTOIONIZATION
QUENCHING
REACTION KINETICS
SPECTROSCOPY
YIELDS