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Appearance of an artifact peak in the particle size distribution measured by DLS at low concentrations


The dynamic light scattering (DLS) method allows the determination of the particle size distribution of suspensions. At high dilutions, an artifact peak appears in the size distribution, which does not correspond to actual particles, but is caused by crossing the scattering volume boundaries by individual particles. The parameters of this peak are analyzed, the causes of its appearance and its effect on determined particle sizes are studied.

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Correspondence to M. N. Kirichenko.

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Original Russian Text © M.N. Kirichenko, A.T. Sanoeva, L.L. Chaikov, 2016, published in Kratkie Soobshcheniya po Fizike, 2016, Vol. 43, No. 8, pp. 32–38.

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Kirichenko, M.N., Sanoeva, A.T. & Chaikov, L.L. Appearance of an artifact peak in the particle size distribution measured by DLS at low concentrations. Bull. Lebedev Phys. Inst. 43, 256–260 (2016).

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  • dynamic light scattering method
  • suspension particle sizes
  • low-concentration suspensions