Low-Energy Electron Surface Diffraction

Why low-energy electrons scattering off a crystal surface interfere to form a pattern revealing atomic arrangement, while penetrating only the outermost atomic layers.

References

• Van Hove, M.A., Somorjai, G.A. "Structure, Energetics, and Dynamics of Metal Surfaces." Surface Science Reports 19, nos. 3-6 (1993): 413–481.