In this study we demonstrate in-situ quantitative measurements of temperature and OH radical concentration profiles in a post-flame region between premixed twin flames, and thus show the potential for use of diode-laser absorption spectroscopy as a combustion diagnostic tool. The diode laser used in this study is an external cavity diode laser (NewFocus Model 6328) operating near 1.5 /spl mu/m. The laser frequency was modulated and slowly scanned across the absorption features simultaneously by applying a 1 kHz sinusoidal wave and a 0.15 Hz sawtoothed signal onto the voltage input of the piezoelectric transducer attached to the tuning mirror of the laser cavity.


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    Title :

    Measurements of temperature and OH radical concentration in combustion gases by absorption spectroscopy with a diode laser


    Contributors:
    Aizawa, T. (author) / Kamimoto, T. (author) / Tamaru, T. (author)


    Publication date :

    1999-01-01


    Size :

    138442 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English