Two-dimensional tomography for gas concentration and temperature distributions based on tunable diode laser absorption spectroscopy

• Published in: Measurement science & technology Vol. 21; no. 4; p. 045301
• Main Authors: Wang, F, Cen, K F, Li, N, Jeffries, Jay B, Huang, Q X, Yan, J H, Chi, Y
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.04.2010
• Subjects: Absorption spectroscopy; Diode lasers; Dynamics; Lasers; Mathematical analysis; Moles; Reconstruction; Temperature distribution

A tomography system is presented that uses wavelength-scanned direct absorption of two transitions of a target species (NH3 in the demonstration experiment) to determine the distributions of gas concentration and temperature. The absorption measurements are performed simultaneously from four platfor...