Results 141 to 150 of about 254 (181)
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Time-Resolved Laser-Induced Incandescence Measurements on Aerosolized Nickel Nanoparticles
The Journal of Physical Chemistry A, 2021This work presents the first quantitative analysis of time-resolved laser-induced incandescence (TiRe-LII) measurements on aerosolized nickel nanoparticles in several gases and over a range of laser fluences. A measurement model composed of spectroscopic and heat transfer submodels is used to recover the particle size distribution parameters and the ...
S. Robinson-Enebeli +2 more
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Quantitative investigation of soot distribution by laser-induced incandescence
Applied Optics, 2000Strategies employed for quantitative measurement by laser-induced incandescence are detailed. Data are obtained for several laminar diffusion flames formed from blended Diesel fuels of known composition. A tomographic procedure is developed to scale the two-dimensional data to soot volume fraction and to correct for the trapping of signal by the soot ...
D J, Bryce, N, Ladommatos, H, Zhao
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LII–lidar: range-resolved backward picosecond laser-induced incandescence
Applied Physics B, 2013A novel concept for remote in situ detection of soot emissions by a combination of laser-induced incandescence (LII) and light detection and ranging (lidar) is presented. A lidar setup based on a picosecond Nd:YAG laser and time-resolved signal detection in the backward direction was used for LII measurements in sooty premixed ethylene–air flames ...
Billy Kaldvee +3 more
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Cavity ringdown and laser-induced incandescence measurements of soot
Applied Optics, 1999Currently laser-induced incandescence (LII) is widely used for the measurement of soot volume fraction. A particularly important aspect of the technique that has received less attention, however, is calibration. The applicability of cavity ringdown (CRD) for measurement of soot volume fraction f(v) is assessed, and the calibration of LII by means of ...
Vander Wal, R. L., Ticich, T. M.
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Chapter 6 Time-Resolved Laser-Induced Incandescence
2009Abstract Online characterization of nanoscaled particles is an important issue in basic research, e.g., combustion soot formation and oxidation, and in several different technical applications, e.g., in nanoparticle production reactors or in automotive raw exhaust.
Alfred Leipertz, Roland Sommer
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Peak soot temperature in laser-induced incandescence measurements
Applied Physics B, 2006In order to understand the processes involved in the laser-induced incandescence (LII) technique, the value of soot temperature at the peak of the incandescence signal has been studied. To this purpose, an absolute two-color LII technique has been applied on ethylene and methane diffusion flames, based on the comparison with a calibrated tungsten ...
De iuliis S +3 more
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Laser-induced incandescence from laser-heated silicon nanoparticles
Applied Physics B, 2016This work describes the application of temporally and spectrally resolved laser-induced incandescence to silicon nanoparticles synthesized in a microwave plasma reactor. Optical properties for bulk silicon presented in the literature were extended for nanostructured particles analyzed in this paper.
Jan Menser +3 more
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Laser-induced incandescence characterization of gas turbine exhausts
SPIE Proceedings, 2003Laser-Induced Incandescence studies of graphite aerosols show that great care has to be taken in interpreting Laser-Induced Incandescence (LII) data from gas turbine exhausts. In principle, particle volume fraction, information on particle size, chemical composition, and physical and chemical properties of the exhaust gas is obtainable by LII without ...
John D. Black +3 more
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Characterization of Nano‐Particles Using Laser‐Induced Incandescence
Particle & Particle Systems Characterization, 2003AbstractLaser‐induced incandescence (LII) is introduced as a valuable tool for the characterization of nanoparticles. This optical measurement technique is based on the heating of the particles by a short laser pulse and the subsequent detection of the thermal radiation. It has been applied successfully for the investigation of soot in different fields
Alfred Leipertz, Stefan Dankers
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Laser-induced incandescence of titania nanoparticles synthesized
2009Laser induced incandescence experiments were carried out in a flame reactor during titania nanoparticle synthesis. The structure of the reactor employed allowed a rather smooth particle growth along the flame axis, with limited mixing of different size particles. Particle incandescence was excited by the 4th harmonic of a Nd:YAG laser.
Cignoli F +3 more
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