Diffraction pattern of electrons scattered quasi-elastically by adsorbed fullerenes

The diffraction patterns are calculated for 2 keV electrons scattered quasi-elastically by C60 molecules adsorbed on a solid surface. It is shown that when the molecules are bound to the substrate strongly enough the symmetry of these patterns reveals uniquely the orientation of the adsorbed fullerenes. A new and effective method that takes into account phenomenologically the focusing of the scattered electrons is proposed for modeling the diffraction patterns

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