Self-expansion patterns of charged particulates and ionic assemblies

Self-expansion patterns of unconstrained assemblies of charged particulates are considered. As the assemblies cannot be described, in general, in the context of a continuum comprising massless charged entities, the complete equation of motion is applied for each member of the assembly. It is shown that irrespective of the initial positions of the particulates, when expanding in free space or else they are identical in size and mass, the assembly tends toward a spherical shape, with characteristic inner structure. Examples of simulations are presented to this end.