title: Numerical study of particle-size distributions retrieved from angular light-scattering data using an evolution strategy with the Fraunhofer approximation.
abstract: 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.
authors.affiliation: Instituto Nacional de Astrofísica Optica y Electrónica (INAOE), Luis E. Erro No.1, Tonantzinita Pubela, 72840 México. thesis_234@yahoo.es
authors.forename: Javier
authors.initials: J
authors.lastname: Vargas-Ubera
authors.forename: Juan Jaime
authors.initials: JJ
authors.lastname: Sánchez-Escobar
authors.forename: J Félix
authors.initials: JF
authors.lastname: Aguilar
authors.forename: David Michel
authors.initials: DM
authors.lastname: Gale