Normal emission photoelectron diffraction: a new technique for determining surface structure

Technical Report · Thu May 01 00:00:00 EDT 1980

DOI:https://doi.org/10.2172/5164881· OSTI ID:5164881

Kevan, S D

One technique, photoelectron diffraction (PhD) is characterized. It has some promise in surmounting some of the problems of LEED. In PhD, the differential (angle-resolved) photoemission cross-section of a core level localized on an adsorbate atom is measured as a function of some final state parameter. The photoemission final state consists of two components, one of which propagates directly to the detector and another which scatters off the surface and then propagates to the detector. These are added coherently, and interference between the two manifests itself as cross-section oscillations which are sensitive to the local structure around the absorbing atom. We have shown that PhD deals effectively with two- and probably also three-dimensionally disordered systems. Its non-damaging and localized, atom-specific nature gives PhD a good deal of promise in dealing with molecular overlayer systems. It is concluded that while PhD will never replace LEED, it may provide useful, complementary and possibly also more accurate surface structural information.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5164881
• Report Number(s): LBL-11017; TRN: 80-015527
• Resource Relation: Other Information: Thesis
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
36 MATERIALS SCIENCE
NICKEL ALLOYS
SURFACE PROPERTIES
SELENIUM ALLOYS
MEASURING INSTRUMENTS
BINDING ENERGY
ELECTRON EMISSION
PHOTOELECTRON SPECTROSCOPY
ALLOYS
ELECTRON SPECTROSCOPY
EMISSION
ENERGY
SPECTROSCOPY
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