We describe a simple experimental arrangement for emission tomographic measurements of radicals in flames. Experimental determinations of two-dimensional spatially resolved distributions of excited-state CH in atmospheric-pressure flames are presented. Calibration of the distributions to absolute number densities is performed with a Rayleigh scattering technique. Methods for simultaneous recording of two to six emission projections and reconstruction from very few (two or three) projections are experimentally investigated. The potential of emission tomography with high temporal resolution for monitoring, e.g., explosions or turbulent flames, is discussed.
© 1988 Optical Society of America
H. M. Hertz and G. W. Faris, "Emission tomography of flame radicals," Opt. Lett. 13, 351-353 (1988)