Description

The Quasi Crystalline Approximation (QCA) is an approximated solution of the Foldy-Lax vector multiple scattering equation of light. it  provides the evaluation of the configuration average scattering coefficient of a three-dimensional ensemble of  spherical particles by taking into account the electromagnetic couplings up to the pair correlation function.

​

The Interference Approximation (ITA) also allows calculating the configuration average scattering coefficient of a  three-dimensional ensemble of  spherical particles assuming single coherent scattering.

​

Both models can be coupled to the N-Flux module, to evaluate the reflection and transmission coefficient of dense heterogeneous media.

EXAMPLE 2

Coupling QCA and N-Flux model calculations

Contrast ratio of paint films a function of the film thickness and HPP VVC

EXAMPLE 1

Scattering efficiency of Hollow Polymer Particles via QCA and ITA

Effect of the variation in void volume concentration (VVC)