Abstract

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

Flame emission tomography based on finite element basis and adjustable mask

Hecong Liu, Qian Wang, Fan Peng, Zhao Qin, and Weiwei Cai
Opt. Express 29(25) 40841-40853 (2021)

Two-dimensional quantitative measurements of methyl radicals in methane/air flame

Yue Wu and Zhili Zhang
Appl. Opt. 54(2) 157-162 (2015)

Sooting flame thermometry using emission/absorption tomography

Robert J. Hall and Paul A. Bonczyk
Appl. Opt. 29(31) 4590-4598 (1990)

Measurement of flame temperature distribution by IR emission computed tomography

Hiroki Uchiyama, Masato Nakajima, and Shinichi Yuta
Appl. Opt. 24(23) 4111-4116 (1985)

Direct measurement of methyl radicals in a methane/air flame at atmospheric pressure by radar REMPI

Yue Wu, Andrew Bottom, Zhili Zhang, Timothy M. Ombrello, and Viswanath R. Katta
Opt. Express 19(24) 23997-24004 (2011)