Detection of iron atoms by emission spectroscopy and laser-induced fluorescence in solid propellant flames

Planar laser-induced fluorescence on atomic iron is investigated in this paper, and a measurement strategy is proposed to monitor the fluorescence of iron atoms with good sensitivity. A model is proposed to fit the experimental fluorescence spectra, and good agreement is found between simulated and...

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Bibliographic Details
Published in:Applied optics (2004) 2018-05, Vol.57 (14), p.3817-3828
Main Authors: Vilmart, G, Dorval, N, Orain, M, Lambert, D, Devillers, R, Fabignon, Y, Attal-Tretout, B, Bresson, A
Format: Article
Language:English
Subjects:
Ammonium perchlorates
Atomic structure
Composite propellants
Computer simulation
Emission spectra
Engineering Sciences
Iron
Lasers
Optics
Photonic
Planar laser induced fluorescence
Propellant combustion
Reactive fluid environment
Solid propellants
Spatial distribution
Spectrum analysis
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Summary:Planar laser-induced fluorescence on atomic iron is investigated in this paper, and a measurement strategy is proposed to monitor the fluorescence of iron atoms with good sensitivity. A model is proposed to fit the experimental fluorescence spectra, and good agreement is found between simulated and experimental spectra. Emission and laser-induced fluorescence measurements are performed in the flames of ammonium perchlorate composite propellants containing iron-based catalysts. A fluorescence signal from iron atoms after excitation at 248 nm is observed for the first time in propellant flames. Images of the spatial distribution of iron atoms are recorded in the flame in which turbulent structures are generated. Iron fluorescence is detected up to 1.0 MPa, which opens the way to application in propellant combustion.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.57.003817