REAL-TIME ACQUISITION OF LASER-INDUCED FLUORESCENCE DECAYS

摘要

Picosecond time-resolved laser-induced fluorescence (PITLIF) has the potential to provide rapid measurements of minor-species concentrations by correction for local quenching conditions on the time scale of turbulence. Previous studies demonstrated that this technique could, provide laser-induced fluorescence data and local quenching rates inflames but used equivalent-time: sampling to obtain the required fluorescence decays. This precludes the use of PITLIF in turbulent systems. Fluorescence decays of sodium seeded into a laminar H-2-O-2-Ar diffusion flame are obtained from real-time data with an acquisition rate on the time scale of turbulence. The results obtained with this method are shown to be similar to those obtained from equivalent-time sampling. [References: 9]