MULTIPOLAR AND DISORDER EFFECTS IN THE OPTICAL-PROPERTIES OF GRANULARCOMPOSITES

We calculate the dielectric response of a one-dimensional system of po larizable spheres located at random. The calculation is done using num erical-simulation techniques with three different kinds of disorder al gorithms, including high multipolar interactions and high filling frac tions. Results for a spectral representation of the dielectric respons e and the absorption spectra of a system of metallic spheres are prese nted and discussed. Special attention is given to the role played by t he disorder algorithm in systems with the same filling fraction.