ON THE AMBIGUITY OF RECONSTRUCTION OF THE STRUCTURE OF A NONCRYSTALLINE SYSTEM FROM THE KNOWN PAIR CORRELATION-FUNCTION IN THE ALGORITHMS BASED ON THE REVERSE MONTE-CARLO METHOD

The ambiguity of reconstruction of the structure of a one-component no ncrystalline system from the known structure factor is considered. Sev eral effective pair correlation (objective) functions are calculated f or a heterogeneous one-component amorphous system consisting of parts having different densities. The use of the reverse Monte Carlo method, provided the construction of rather uniform models whose pair-correla tion functions are close to objective ones. The success achieved prove s that no adequate model for a one-component noncrystalline system can be constructed by topological methods, without introducing conditions associated with the form of particle interaction.