G. Göbel, A. Lippek, T. Wriedt, K. Bauckhage
Monte Carlo Simulation of Light Scattering by Inhomogeneous Spheres
accepted for presentation at the Radiative Transfer Symposium, Kusadasi, Turkey (1997)
Abstract:
The light scattering properties of optically inhomogeneous spherical
particles are studied by means of a phase resolved 3-dimensional Monte Carlo
simulation. This is equivalent to a radiative transfer process in a
participating medium with spherical boundaries.
For zero concentration of inhomogenities we obtain the undisturbed scattering
distribution with its size-dominated oscillating structure. With
increasing optical depth of the scattering medium this interference
structure is disturbed by multiple scattering within the particle and the
corresponding loss of coherence.
For large optical depth the Schoenberg result for a sphere with a Lambert
surface is obtained.
Thus it is possible to quantify the influence of size and concentration
of a dispersed phase onto the light scattering properties of an
inhomogeneous particle. This is of great importance for the application of
various optical particle sizing techniques on such media.
