Abstract
The validity of a split-atom method (SAM), which is a technique to determine the disordered structure, is examined by a computer simulation based on a simple structure model. It turns out that the distance between equilibrium positions and the thermal vibrationsof the disordered atom exert a significant influence on revealing the structural disordering. However, it is concluded that a resolving power of SAM is governed by the accuracy of the diffraction intensity measurement. We propose an experimental method to determine the disordered structure with adjacent equilibrium positions.