Evaluation of OH laser-induced fluorescence techniques for supersonic combustion diagnosticsThe limitations on application of dye laser and narrowband tunable KrF excimer laser systems to planar OH fluorescence measurements in supersonic combustion test facilities are examined. Included in the analysis are effects of collisional quenching, beam absorption, fluorescence trapping, and signal strengths on achievable measurement accuracy using several excitation and detection options for either of the two laser systems. Dye-based laser systems are found to be the method of choice for imaging OH concentrations less than 10 exp 15 per cu cm, while the KrF based systems provide significant reduction in measurement ambiguity for concentrations in excess of 10 exp 15 per cu cm.
Document ID
19920044311
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Quagliaroli, T. M. (NASA Headquarters Washington, DC United States)
Laufer, G. (NASA Headquarters Washington, DC United States)
Krauss, R. H. (NASA Headquarters Washington, DC United States)
Mcdaniel, J. C., Jr. (Virginia, University Charlottesville, United States)