Plasmon Angular Profiles in Low Energy Electron Diffraction from Single Crystals
- 1 March 1972
- journal article
- Published by American Vacuum Society in Journal of Vacuum Science and Technology
- Vol. 9 (2) , 743-746
- https://doi.org/10.1116/1.1317767
Abstract
Measurement of surface and bulk plasma peaks in the secondary electron distribution from Ni(100) and W(110) provides confirmation of two-step inelastic diffraction. Angular profiles are made in the neighborhood of selected prominent elastic diffraction maxima. Momentum conservation parallel to the surface leads to the prediction of a doublet structure in the angular distribution of diffracted electrons having lost the surface plasmon energy. This structure is observed. The observed structure in the bulk plasmon loss angular profile is more complex and is indicative of other conservation laws.Keywords
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