Computer simulation of reflection high energy electron diffraction from ultrathin iron layers

The results of research work on development of new applications of electron diffraction in metallurgy and materials sience are presented. Namely, we i nvestigate in detail the consequences of the use of reflection geometry whi ch enables "in-situ" examination of a material surface during a selected te chnological process. We demonstrate that in theoretical interpretation of e xperimental data collected in such a geometry it is essential to take care about the refraction effects. It means that analyzing experimental data one must account not only the geometrical arrangement of atoms at the surface but also specific values of the scattering potential.