ELECTRONIC COMPUTATIONS OF LIGHT SCATTERING FUNCTIONS FOR HETERODISPERSE SYSTEMS OF ISOTROPIC SPHERES
WAYNE STATE UNIV DETROIT MI DEPT OF CHEMISTRY
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Fortran programs were developed to compute light scattering functions for heterodisperse systems which can be described by a bi-parametric, unimodal, exponential distribution function. The program had to include the evaluation of the Mie functions for angular scattering for any arbitrary values of the size parameter alpha within the range 0 alpha 25. This involves the generation of the Riccati-Bessel functions and Legendre polynomials. Two methods of numerical integration viz. Gaussian Quadrature and Simpsons rule of the expressions containing the products of the Mie functions and the distribution function were investigated, and the results were compared. The theoretical results were also checked by extrapolation to the condition of monodispersity.
- Physical Chemistry