ABSTRACT
Consider a collection of particles (monomers) undergoing disordered motion as a result of di usion, for example. is motion sometimes brings particles su ciently close to each other to produce interaction. Suppose that the result of interaction is that two su ciently close particles have a nite probability to stick together irreversibly to form a cluster which then continues to di use and may interact again with other particles. If we had started with a collection of particles of equal mass, the net result of many such interactions is to convert it into a collection of clusters with a distribution of di erent masses. e process whereby an initially monodisperse collection of particles is converted into a distribution of clusters of di erent sizes by localized aggregation of clusters is what we mean by cluster-cluster aggregation (CCA).
