caa a22 4500 445370386 CHVBK 20180317142944.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00340-011-4394-6 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4394-6 Measurement of soot morphology by integrated LII and elastic light scattering [Elektronische Daten] [D. Snelling, O. Link, K. Thomson, G. Smallwood] A compact experimental setup that integrates laser-induced incandescence (LII) and one-angle elastic light scattering (1A-ELS) to measure the size of polydisperse soot aggregates is described. A 532nm laser and a detection angle of 35 degrees were employed, which provided sensitivity for aggregate radius of gyrations (R g) of R g≤200nm. Both lognormal and self-preserving distribution functions are compared with width parameters derived from both aggregation theory and transmission electron microscopy (TEM) measurements. Using these distributions, mean aggregate sizes derived from the scattering measurements are compared. The LII+1A-ELS technique is validated with a two-angle elastic light scattering (2A-ELS) approach with an additional detection angle at 145deg. Unlike LII+1A-ELS, the 2A-ELS technique has the advantage of not requiring knowledge of soot optical properties. Good agreement is found between the two techniques for a given distribution. A fundamental discrepancy exists between distributions derived from TEM and those according to aggregation theory, limiting the accuracy of both 2A-ELS and LII+1A-ELS. The dependence of both techniques on laser fluence and hence soot temperature is examined and discussed. Her Majesty the Queen in Right of Canada, 2011 Snelling D. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Link O. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Thomson K. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Smallwood G. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut Applied Physics B Springer-Verlag 104/2(2011-08-01), 385-397 0946-2171 104:2<385 2011 104 340 https://doi.org/10.1007/s00340-011-4394-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4394-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Snelling D. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 700 1- Link O. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 700 1- Thomson K. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 700 1- Smallwood G. Institute for Chemical Process and Environmental Technology, National Research Council of Canada, 1200 Montreal Road, K1A 0R6, Ottawa, Ontario, Canada aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 104/2(2011-08-01), 385-397 0946-2171 104:2<385 2011 104 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer