A-Ray Photoelectron Spectroscopy XPS - Adsorbate-core Emission

These results have been compared with a kinematic calculation involving the following assumptions (i) excitation matrix elements are those appropriate to a 

Following such a concentration of attention on ideal systems, particularly CO on Ni, it is refreshing to find that photoemission can produce structural information in the real world also. Photoelectron diffraction effects in emission from substrate-core levels at polar angles 20° can be described semi-quantitatively in terms of Kikuchi bands, which are observed, for example, in FEED experiments at 5 300 eV. 

Thomas and co-workers ji ve used the phenomenon in a qualitative fashion 

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