INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
artículos
Título:
Scattering of clusters of spherical particles?Modeling and inverse problem solution in the Rayleigh?Gans approximation
Autor/es:
ELICABE, GUILLERMO
Revista:
JOURNAL OF QUANTITATIVE SPECTROSCOPY AND RADIATIVE TRANSFER
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 127 p. 183 - 191
ISSN:
0022-4073
Resumen:
In this work, an exact scattering model for a system of clusters of spherical particles, based on the Rayleigh?Gans approximation, has been parameterized in such a way that it can be solved in inverse form using Thikhonov Regularization to obtain the morphological parameters of the clusters. That is to say, the average number of particles per cluster, the size of the primary spherical units that form the cluster, and the Discrete Distance Distribution Function from which the z-average square radius of gyration of the system of clusters is obtained. The methodology is validated through a series of simulated and experimental examples of x-ray and light scattering that show that the proposed methodology works satisfactorily in unideal situations such as: presence of error in the measurements, presence of error in the model, and several types of unideallities present in the experimental cases.