Numerical study of particle-size distributions retrieved from angular light-scattering data using an evolution strategy with the Fraunhofer approximation.
An algorithm is presented based on an evolution strategy to retrieve a particle size distribution from angular light-scattering data. The analyzed intensity patterns are generated using the Mie theory, and the algorithm retrieves a series of known normal, gamma, and lognormal distributions by using the Fraunhofer approximation. The distributions scan the interval of modal size parameters 100 < or = alpha < or = 150. The numerical results show that the evolution strategy can be successfully applied to solve this kind of inverse problem, obtaining a more accurate solution than, for example, the Chin-Shifrin inversion method, and avoiding the use of a priori information concerning the domain of the distribution, commonly necessary for reconstructing the particle size distribution when this analytical inversion method is used.
Vargas-Ubera
Javier
J
Instituto Nacional de Astrofísica Optica y Electrónica (INAOE), Luis E. Erro No.1, Tonantzinita Pubela, 72840 México. thesis_234@yahoo.es
Sánchez-Escobar
Juan Jaime
JJ
Aguilar
J Félix
JF
Gale
David Michel
DM