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Sökning: WFRF:(Lodi Lorenzo)

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1.
  • Rutkowski, Lucile, et al. (författare)
  • Detection of OH and H2O in an Atmospheric Flame by Near-Infrared Optical Frequency Comb Spectroscopy
  • 2017
  • Ingår i: 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). - : IEEE. - 9781509067367
  • Konferensbidrag (refereegranskat)abstract
    • Absorption spectroscopy is attractive for combustion diagnostics because it allows in-situ and calibration-free quantification of reactants/products and thermometry. However, spectra measured at atmospheric pressure in the near-infrared telecom range, where laser sources and optical components are readily available, suffer from strong water interference. Cavity-enhanced optical frequency comb spectroscopy (CE-OFCS) is well suited for detection of other species, as it provides broad bandwidth with high signal-to-noise ratio and resolution, and allows de-convolving the spectra hidden among water transitions. Here we report detection of OH in the presence of H2O in an atmospheric premixed methane/air flat flame by CE-OFCS at 1.57 μm. We demonstrate a new water line list that is more accurate than HITEMP [1] and we isolate the OH lines by dividing spectra taken at different heights above the burner (HABs) to retrieve OH concentration and flame temperature.
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2.
  • Rutkowski, Lucile, et al. (författare)
  • Measurement of H2O and OH in a Flame by Optical Frequency Comb Spectroscopy
  • 2016
  • Ingår i: Proceedings Conference on Lasers and Electro-Optics. - Washington, D.C. : IEEE. - 9781943580118
  • Konferensbidrag (refereegranskat)abstract
    • We measure broadband H2O and OH spectra in a flame using near-infrared cavity-enhanced Fourier transform optical frequency comb spectroscopy, we retrieve temperature and OH concentration, and compare water spectra to an improved line list.
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