Published date:Oct 08 2018

Journal Title: KnE Engineering

Issue title: Breakthrough directions of scientific research at MEPhI: Development prospects within the Strategic Academic Units

Pages:244–253

DOI: 10.18502/keg.v3i6.3000

S N Chirikovsnchirikov@mephi.ru

A V Shkirin

The results of the scattering matrix measurements at a wavelength of 0.63 μm are presented for an aqueous suspension of lead oxide containing plate-like particles and their aggregates with monomers dimensions of ∼ 5 nm. The results of the measurements are compared with the matrix calculations for axially symmetric scatterers (ellipsoids of revolution). It is shown that the presence of aggregates affects the scattering properties of such a medium. The particles size distribution of the dispersed medium was found by solving the problem of minimizing the sum of the squares of the deviations of the experimental values of the matrix elements from calculated using the model of axially symmetric scatterers. It is demonstrated that the particle size distribution is more accurately retrieved by minimizing the sum of the squares of the deviations for the sum of the diagonal elements. The obtained distribution is compared with one measured by the dynamic light scattering method.

Keywords: scattering matrix, aggregates, particle size distribution, axially symmetric scatterers, dynamic light scattering

[1] Xu, R. (2002). Particle Characterization: Light Scattering Methods. New York: Kluwer Academic Publishers.


[2] Mishchenko, M. I., Travis, L. D., and Lacis, A. A. (2002). Scattering, Absorption, and Emission of Light by Small Particles. Cambridge: Cambridge University Press.


[3] Weber, M. J. (2003). Handbook of Optical Materials. New York: CRC Press LLC.


[4] Wu, Y., Cheng, T., Zheng, L., et al. (2016). Effect of morphology on the optical properties of soot aggregated with spheroidal monomers. Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 168, pp. 158–169.


[5] Wu, Y., Gu, X., Cheng, T., et al. (2012). The single scattering properties of the aerosol particles as aggregated spheres. Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 113, pp. 1454–1466.


[6] Vilaplana, R., Luna, R., and Guirado D. (2011). The shape influence on the overall single scattering properties of a sample in random orientation. Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 112, pp. 1838–1847


[7] Tymper, S. I. and Chirikov, S. N. (2015). Retrieval of particle size and shape distributions of TiO2 and BaTiO3 aqueous suspensions using measurement data on the scattering matrix. Optics and Spectroscopy, vol. 118, pp. 460–465.