An Experimental Investigation of Laminar Premixed Aviation Fuel-Air Flames

2001 ◽  
Author(s):  
A. G. Kyne ◽  
P. M. Patterson ◽  
M. Pourkashanian ◽  
C. W. Wilson ◽  
A. Williams
Keyword(s):  
Experimental Investigation ◽  
Atmospheric Pressure ◽  
Laser Induced Fluorescence ◽  
Gas Analysis ◽  
Aviation Fuel ◽  
Concentration Profiles ◽  
Temperature Profiles ◽  
Intermediate Species ◽  
Analysis Techniques ◽  
Co Gas

An experimental investigation of a premixed kerosene/O2/N2 flame at various stoichiometries has been undertaken to provide a wider database for validation purposes. A premix burner has been designed to burn the multi-component fuel at atmospheric pressure. Particular emphasis is placed on the measurement of intermediate species using non-intrusive techniques such as laser-induced fluorescence for the measurement of OH concentrations. In addition to this, conventional gas analysis techniques were employed in providing concentration profiles of O2, CO2, and CO. Gas samples were withdrawn along the central axis of the flame with a quartz microprobe before being passed through a system of gas analysers. Temperature profiles were obtained using a Pt/Pt-13%Rh thermocouple.

Flame structure and flame reaction kinetics - IV. Experimental investigations of a fuel-rich hydrogen+oxygen+nitrogen flame at atmospheric pressure

1970 ◽  
Vol 317 (1529) ◽  
pp. 227-234 ◽  
Keyword(s):  
Experimental Investigation ◽  
Hydrogen Atom ◽  
Light Intensity ◽  
Temperature Profile ◽  
Atmospheric Pressure ◽  
Flame Structure ◽  
Inorganic Salts ◽  
Experimental Investigations ◽  
Concentration Profiles ◽  
Stable Species

An experimental investigation is described of the microstructure of a flat, premixed, fuel-rich hydrogen+oxygen+nitrogen flame at atmospheric pressure. The study involved measurement of the temperature profile and the concentration profiles for the stable species in the flame. By measuring the profile of emitted light intensity when traces of certain inorganic salts were added to the gases entering the flame, it was further possible to derive information about relative hydrogen atom concentrations in the burnt-gas region.

Laser-induced fluorescence of CH and CH2O in atmospheric pressure methane/air Bunsen flames

2000 ◽  
Author(s):  
Robert Klein-Douwel ◽  
Jorge Luque ◽  
Jay Jeffries ◽  
Gregory Smith ◽  
David Crosley
Keyword(s):  
Atmospheric Pressure ◽  
Laser Induced Fluorescence ◽  
Bunsen Flames

scholarly journals Integrated quantitative PIXE analysis and EDX spectroscopy using a laser-driven particle source

2021 ◽  
Vol 7 (3) ◽  
pp. eabc8660
Author(s):  
F. Mirani ◽  
A. Maffini ◽  
F. Casamichiela ◽  
A. Pazzaglia ◽  
A. Formenti ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Materials Science ◽  
Quantitative Information ◽  
Pixe Analysis ◽  
Materials Analysis ◽  
Particle Source ◽  
X Ray ◽  
Analysis Techniques ◽  
Sample Structure ◽  
Elemental Characterization

Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental investigation performed at the Centro de Láseres Pulsados in Salamanca. Thanks to their potential for compactness and portability, laser-driven particle sources are very appealing for materials science applications, especially for materials analysis techniques. We demonstrate the possibility to exploit the x-ray signal produced by the co-irradiation with both electrons and protons to identify the elements in the sample. We show that, using the proton beam only, we can successfully obtain quantitative information about the sample structure through laser-driven PIXE analysis. These results pave the way toward the development of a compact and multifunctional apparatus for the elemental analysis of materials based on a laser-driven particle source.

scholarly journals Анализатор спектра флуоресценции на основе оптоволоконного Y-циркулятора

2018 ◽  
Vol 44 (14) ◽  
pp. 50
Author(s):  
Э.К. Алгазинов ◽  
В.А. Шульгин ◽  
И.А. Лавриненко ◽  
А.А. Сирота
Keyword(s):  
Experimental Investigation ◽  
Fiber Optic ◽  
Laser Induced Fluorescence ◽  
Biological Media ◽  
Passive Fiber ◽  
Radiation Losses ◽  
Probe Analysis ◽  
Optical Beams ◽  
Lif Spectroscopy

AbstractWe consider a method of probe analysis employing fiber-optic a composite Y-circulator design for the implementation of laser-induced fluorescence (LIF) spectroscopy diagnostics. The proposed principle of the LIF analyzer is based on spatially separated directed optical beams of excitation and fluorescence radiations. Conditions of the effective Y-circulator operation as a passive fiber-optic switch are determined. Experimental investigation of the switched radiation losses is performed. An example of using the proposed analyzer for LIF diagnostics of biological media is presented.

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