Abstract

Computed tomography is used to obtain species profiles within a low pressure premixed CH₄/N₂O flame as a function of height above the burner surface and lateral position at that height. This information is extracted from parallel line of sight absorbance data by using Abel inversion. This process yields two dimensional slices of the flame. At any point within each slice the infrared spectrum of the species present may be obtained. Abel inversion may be applied only to systems possessing axial symmetry. Species profiles for inverted and normal line of sight absorbance spectra are compared and contrasted with data taken on similar systems by different methods.

© 1992 Optical Society of America