COMBINED VIBRATIONAL AND ROTATIONAL CARS FOR SIMULTANEOUS MEASUREMENTS OF TEMPERATURE AND CONCENTRATIONS OF FUEL, OXYGEN, AND NITROGEN
作者： Per-Erik Bengtsson , Lars Martinsson , Marcus Aldén
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摘要: Simultaneous measurements of temperature and relative concentrations fuel, oxygen, nitrogen using combined vibrational coherent anti-Stokes Raman Spectroscopy (CARS) dual-broad-band rotational CARS have been demonstrated with the use a Nd:YAG laser single dye laser. With double-folded BOXCARS phase-matching scheme, both signals were generated in such way that superimposed at spectrograph. an additional mirror arrangement inside spectrograph, recorded simultaneously on diode-array detector. The accuracy single-shot fuel concentration has investigated, methane/air diffusion flame demonstrated. influence systematic errors measured is discussed.
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