We introduce numerical methods and algorithms to estimate the main parameters of fractal-like particle aggregates from their optical structure factor (i.e. light scattering diagrams). The first algorithm is based on a direct and simple method, but its applicability is limited to aggregates with large size parameter and intermediate fractal dimension. The second algorithm requires to build calibration curves based on accurate particle agglomeration and particle light scattering models. It allows analyzing the optical structure factor of much smaller aggregates, regardless of their fractal dimension and the size of the single particles. Therefore, this algorithm as well as the introduction of a criterial curve to detect the different scattering regimes, are thought to be powerful tools to perform reliable and reproducible analysis.

JO - Metrology and Measurement Systems L1 - http://rhis.czasopisma.pan.pl/Content/89949/PDF/Journal10178-VolumeXIXIssue3_03.pdf L2 - http://rhis.czasopisma.pan.pl/Content/89949 IS - No 3 EP - 370 KW - fractals KW - aggregates KW - light scattering KW - scattering diagrams KW - structure factor. ER - A1 - Mroczka, Janusz A1 - Woźniak, Mariusz A1 - Fabrice R.A. Onofri PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation JF - Metrology and Measurement Systems SP - 359 T1 - Algorithms and methods for analysis of the optical structure factor of fractal aggregates UR - http://rhis.czasopisma.pan.pl/dlibra/docmetadata?id=89949 DOI - 10.2478/v10178-012-0039-2