caa a22 4500 44537036X CHVBK 20180317142944.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00340-011-4535-y doi (NATIONALLICENCE)springer-10.1007/s00340-011-4535-y Influence of the cumulative effects of multiple laser pulses on laser-induced incandescence signals from soot [Elektronische Daten] [S. De Iuliis, F. Cignoli, S. Maffi, G. Zizak] The effect of multiple laser pulses reaching soot particles before an actual laser-induced incandescence (LII) measurement is investigated in order to gain some insights on soot morphological and fine structure changes due to rapid laser heating. Soot, extracted from a premixed and a quenched diffusion flames, is flowing through a tubular cell and undergoes a variable number of pulses at different fluence. The response of soot is studied by the two-color LII technique. Transmission electron microscopy (TEM) analysis of laser-modified soot aggregates from the diffusion flame is also presented. The results indicate that even at low laser fluences a permanent soot transformation is induced causing an increase in the absorption function E(m). This is interpreted as an induced graphitization of soot particles by the laser pulse heating. At high fluences the vaporization process and a profound restructuring of soot particles affect the morphology of the aggregates. Soot from diffusion and premixed flames behaves in a similar way although this similarity occurs at different fluence levels indicating a different initial fine structure of soot particles. Springer-Verlag, 2011 De Iuliis S. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut Cignoli F. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut Maffi S. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut Zizak G. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut Applied Physics B Springer-Verlag 104/2(2011-08-01), 321-330 0946-2171 104:2<321 2011 104 340 https://doi.org/10.1007/s00340-011-4535-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4535-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- De Iuliis S. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut NATIONALLICENCE 700 1- Cignoli F. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut NATIONALLICENCE 700 1- Maffi S. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut NATIONALLICENCE 700 1- Zizak G. CNR-IENI, sede di Milano, via Cozzi, 53, 20125, Milan, Italy aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 104/2(2011-08-01), 321-330 0946-2171 104:2<321 2011 104 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer