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

Abstract

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.

Authors:
Publication Date:
Research Org.:
California Univ., Berkeley (USA). Lawrence Berkeley Lab.
OSTI Identifier:
5164881
Report Number(s):
LBL-11017
TRN: 80-015527
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: Thesis
Country of Publication:
United States
Language:
English
Subject:
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; 440300* - Miscellaneous Instruments- (-1989); 360104 - Metals & Alloys- Physical Properties

Citation Formats

Kevan, S.D. Normal emission photoelectron diffraction: a new technique for determining surface structure. United States: N. p., 1980. Web. doi:10.2172/5164881.
Kevan, S.D. Normal emission photoelectron diffraction: a new technique for determining surface structure. United States. doi:10.2172/5164881.
Kevan, S.D. Thu . "Normal emission photoelectron diffraction: a new technique for determining surface structure". United States. doi:10.2172/5164881. https://www.osti.gov/servlets/purl/5164881.
@article{osti_5164881,
title = {Normal emission photoelectron diffraction: a new technique for determining surface structure},
author = {Kevan, S.D.},
abstractNote = {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.},
doi = {10.2172/5164881},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1980},
month = {Thu May 01 00:00:00 EDT 1980}
}

Technical Report:

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