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Polarization spectroscopy applied to C2 detection in a flame

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Abstract

The detection of C2 radicals in a premixed acetylene-oxygen flame by using polarization spectroscopy is reported. The signal was recorded in the Swan system,d 3 II g−a 3 II u (0, 0), using a pulsed dye laser. The spectrum shows a very good signal-to-noise ratio with clearly resolved rotational structures of theP andR triplets. The dependence of the signal on the pump-beam polarization was also studied. The spatial distribution of the signal from C2 radicals in the flame was measured as a demonstration of the use of polarization spectroscopy in combustion diagnostics.

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Authors and Affiliations

  1. Department of Technical Physics, Helsinki University of Technology, Rakentajanaukio 2 C, FIN-02150, Espoo, Finland

    K. Nyholm, M. Kaivola & C. G. Aminoff

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  1. K. Nyholm
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  2. M. Kaivola
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  3. C. G. Aminoff
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Nyholm, K., Kaivola, M. & Aminoff, C.G. Polarization spectroscopy applied to C2 detection in a flame. Appl. Phys. B 60, 5–10 (1995). https://doi.org/10.1007/BF01082066

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