Spatially resolved multispecies and temperature analysis in hydrogen flames

Abstract

We report on spatially resolved simultaneous measurements of temperature and majority species concentrations along a line segment in a premixed laminar H(2)-air flame. The results are obtained from Raman and Rayleigh scattering by using a narrow-band KrF excimer laser and a spectrally and spatially resolving detector system that consists of a high-throughput spectrometer and a gated, intensified, two-dimensional CCD camera. The data presented here are integrated over 100 laser shots. Absolute density profiles of N(2), O(2), H(2)O, and H(2), as well as temperature profiles at various heights through the flame, are presented. A discussion of the required calibration procedures and a summary of the necessary spectroscopic background are also included in this paper.