LIISim: a modular signal processing toolbox for laser-induced incandescence measurements

A review on determining the refractive index function, thermal accommodation coefficient and evaporation temperature of light-absorbing nanoparticles suspended in the gas phase using the laser-induced incandescence

“…In [26], the Fe NP laser heating was performed in a hot wall flow reactor filled with argon and nitrogen as carrier gases. The synthesized Fe NPs by the pyrolysis of Fe(CO) 5 were analyzed by TEM and LII. Based on the least square fit of the experimental LII decay curve and the calculated curve defined by the LII model, a thermal accommodation coefficient value was determined as α = 0.13 for both N 2 and Ar.…”

“…In [117], the peak temperatures of CEINs, formed in the shock wave pyrolysis of the mixtures of 0.25% C 6 H 6 + 0.25% Fe(CO) 5 in Ar and 0.5% C 2 H 2 + 0.25% Fe(CO) 5 in Ar, were also measured by two-color pyrometry. In both the investigated mixtures, the peak particle temperature of CRINs was stable, despite the fact that the laser fluence rise and that the mean peak temperature values were found to be 2852 and 2770 K, which were lower than the bulk Fe boiling temperature (3100 K).…”

“…In the common LII technique, the particle volume fraction or particle size distribution are determined, on the one hand, by analyzing the LII signals [5] using the suggested NP properties. The LII signal decrease rate is connected with the thermodynamic properties of the laser-heated NPs.…”

Nanoparticles in analytical laser and plasma spectroscopy – a review of recent developments in methodology and applications

“…Since the proper interpretation of the LII signal is not straightforward, attempts are made to standardize calibration and signal processing protocols. 107,108 When the laser uence is high enough to vaporize the NPs, the emitted atomic spectrum can also be used to gain information on the particles. This is the basis of laser-induced breakdown spectroscopy (LIBS), a technique well-known in analytical spectrochemistry 109 (see Section 3.3.3. for details).…”

Modeling Laser-Induced Incandescence of Soot Particles Produced In A Premixed Ch4/O2/N2 Flat Flame

“…Lemaire and Mobtil eventually highlighted the need for additional theoretical analyses supported by comparisons between simulated data and experimentally monitored signals obtained in well characterized media. With this in mind and considering that the validity of the database provided by Goulay et al has been recently somewhat questioned by Mansmann et al [20], Menanteau and Lemaire proposed a series of works [21,22] in which a set of LII signals measured in a diffusion flame of Diesel has been simulated using one of the most (if not the most) refined LII-model formulation ever implemented so far. By using an original optimization procedure coupling design of experiments and a genetic algorithm-based solver, these authors proposed a fully parameterized LII model formulation allowing obtaining simulated and measured signals merging on a single curve.…”