3-DIMENSIONAL RECONSTRUCTION BY HOLOGRAPHIC LEED - PROPER IDENTIFICATION OF THE REFERENCE WAVE

It is shown in this paper that the proper identification of the reference wave is the key to the successful reconstruction of a three-dimensional image of the configuration of an atomic adsorption site from a set of diffuse low-energy electron diffraction (DLEED) patterns of different electron energies, but the same direction of incidence of the electron beam. We develop a reconstruction algorithm based on this idea, and demonstrate its effectiveness by application to a set of calculated DLEED patterns. A powerful feature of our algorithm is that it also filters out any residual effects on the diffraction patterns of long-range order amongst the adsorbates, thus enabling the application of holographic LEED to disordered adsorbates of much higher coverage.