Abstract: In order to describe the local close packed structure of various shells near an atom in a simple liquid or a noncrystalline glass, and further study the chemical short-range order, intermediate-range order and the relation between the chemical ordering and the distance, we, in this paper, present the nested Voronoi polyhedron in which the following one includes the preceding one and expound the method of its construction and computation. As an example of application of this method, we report the computation of some configurations of LiCl glass and the statistical analysis of these results.

Key words: Short-range order, Intermediate-range order, Local close packing, LiCl glass