Tomographic reconstruction of multiple in-line holograms for multiple scattering in low energy electron holography

Abstract

We generate simulated holograms for low energy electron point source (LEEPS) microscopy. For a given object (atomic cluster) we construct a number of different holograms by varying the position or the orientation of the object relative to the screen. We then compare the three-dimensional structures of the reconstructions obtained from these holograms using methods developed and reported in previous works. In this investigation, we focus on clusters for which multiple scattering must be taken into account. We report results for bcc-type clusters, a spiral configuration, and some random arrangements. We find that the methods employed give vastly improved reconstructions even when multiple scattering is important. PACS No.: 61.14Nm