Abstract
Recent developments to reconstruct real space atomic images from diffuse LEED intensities generated by disordered adsorbates ask for data at higher electron energies in order to improve resolution. However, at energies above ∼ 500 eV increasing thermal diffuse and Kikuchi scattering as well as crowding of substrate spots make the direct measurement of such data practically impossible. Therefore, we describe a new procedure to measure diffuse intensity distributions: we show both experimentally and theoretically that conventional superstructure spots of ordered adsorbates sample the diffuse distribution when the local adsorption geometry is the same. So, diffuse intensity distributions can be obtained by conventional spot measurements. Diffuse patterns resulting from this sampling procedure may be input to holographic reconstruction techniques particularly when data of different energies are needed.
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