Vol. 41, Issue 3, pp. 519-525

Abstract

We suggest that the structure factor could be a source of uncertainty when the number concentration of non-absorbing aggregate particles is experimentally determined from Rayleigh–Debye–Gans (RDG) scattering theory. Different characteristics of various structure factors have been examined as a function of qR_g. We present deviation of various structure factors from the exponential structure factor. Number concentrations estimated from various structure factors differ in the range of 1.0 < qR_g < 10 where most of flame-synthesized non-absorbing particles are present as aggregates. We compare aggregate number concentrations of silica particles determined using various structure factors.