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Proceedings Paper

Rayleigh and predissociative fluorescence imaging of total and quantum state-specific densities from a combustion bomb using tunable excimer laser light
Author(s): Gyungsoo Kim; Hongjie An; Erhard W. Rothe; Lynne M. Hitchcock; Youngwei Gu; Gene P. Reck
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Paper Abstract

Rayleigh Scattering (RS) and Planar Laser Induced Predissociative Fluorescence (PLIPF) are used to obtain 2-D images of total and of state specific [i.e., of definite rotational levels of OH (v' equals 0) and O2 (v' equals 2, 3, 6, or 7)] densities of the burned and unburned zones inside a combustion bomb. A tunable excimer laser, operated in either the 193 nm- or 248 nm-range, is used. Our bomb is about the size of an automobile engine cylinder. As each volume element of the fuel mixture burns, it forms high-T products with large specific volumes. Because the thermodynamics are well known, the bomb may serve as a reference device for diagnostics for high temperature species via pulsed-laser methods. The total densities and the mole fractions of the various constituents can be accurately calculated. Work has been done with various compositions of hydrogen-air and propane-air fuel mixtures.

Paper Details

Date Published: 24 May 1993
PDF: 4 pages
Proc. SPIE 1862, Laser Applications in Combustion and Combustion Diagnostics, (24 May 1993); doi: 10.1117/12.145691
Show Author Affiliations
Gyungsoo Kim, Wayne State Univ. (United States)
Hongjie An, Wayne State Univ. (United States)
Erhard W. Rothe, Wayne State Univ. (United States)
Lynne M. Hitchcock, Wayne State Univ. (United States)
Youngwei Gu, Wayne State Univ. (United States)
Gene P. Reck, Wayne State Univ. (United States)

Published in SPIE Proceedings Vol. 1862:
Laser Applications in Combustion and Combustion Diagnostics
Larry C. Liou, Editor(s)

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