Comments on the Radial Distribution Functions and Structure Factors of Aggregates: Fractal and Non-Fractal Approaches

The definitions and applications of Radial Distribution Function (RDF) and Structure Factor (SF) to study properties of aggregate are found in many papers and books. The approach adopted to calculate the RDF and the SF to determine the interaction potential between particles of an aggregate is very different from that adopted to obtain their fractal properties. The difference between the two approaches will be shown in details here. This article was written to graduate and postgraduate students of Physics