Schulz, Christof; Sick, V.; Meier, U.E.; Heinze, J.; Stricker, W.:
Quantification of NO A-X (0, 2) Laser-Induced Fluorescence: Investigation of Calibration and Collisional Influences in High-Pressure Flames
1999
In: Appl. Opt., Jg. 38 (1999), Heft 9, S. 1434 - 1443
Artikel/Aufsatz in Zeitschrift / Fach: Maschinenbau
Titel:
Quantification of NO A-X (0, 2) Laser-Induced Fluorescence: Investigation of Calibration and Collisional Influences in High-Pressure Flames
Autor(in):
Schulz, Christof im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Sick, V.; Meier, U.E.; Heinze, J.; Stricker, W.
Erscheinungsjahr:
1999
Erschienen in:
Appl. Opt., Jg. 38 (1999), Heft 9, S. 1434 - 1443

Abstract:

Laser-induced-fluorescence techniques have been used successfully for quantitative two-dimensional measurements of nitric oxide. NO A-X(0, 2) excitation at 248 nm recently found applications in internal-combustion engines. We assess the collisional processes that influence quantification of signal intensities in terms of saturation, rotational energy transfer, and line broadening, using laminar high-pressure methane/air and n-heptane/air flames at pressures as high as 80 bars (8 x 10(6) Pa). A calibration method that is applicable in technical combustion systems based on addition of NO to the burning flame is investigated for various air/fuel ratios and pressures and yields information about the influence of NO reburn processes.