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4 May 1999 Compound identification in multicomponent mixtures via REMPI at ambient conditions
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Our efforts to chemically analyze aromatic hydrocarbons by resonance enhanced multiphoton ionization (REMPI) spectroscopy has been extended to mixtures. Indene has been detected in the headspace over coal tar and creosote via a characteristic band at 287.9 nm. Both sample and data collection occur for ambient pressure and temperature conditions. The indene spectra have also been examined for the effects of pressure broadening, which are discernible but small. High resolution absorbance spectra establish the feasibility for a similar REMPI strategy to detect benzene and toluene via an on-off resonance strategy, similar to that practiced in differential absorbance LIDAR (DIAL) and differential absorbance optical spectroscopy. Angular/wavelength acceptance criteria for the frequency doubling process, by which the tunable ultraviolet light is generated, are considered. Options for ultraviolet tunable solid state lasers, which are the key to real-time monitors based on REMPI technology, are assessed.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregory D. Gillispie, Maxwell R. Lucci, Orven F. Swenson, and Joseph L. Klingfus "Compound identification in multicomponent mixtures via REMPI at ambient conditions", Proc. SPIE 3613, Solid State Lasers VIII, (4 May 1999);


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