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1992 | 81 | 1 | 67-72
Article title

On the Correspondence of the Experimental EEL Spectra with the Electron Structure of Tungsten

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Languages of publication
EN
Abstracts
EN
In the previous paper [7] we have directly compared the experimental Electron Energy Loss (EEL) spectra with both the theoretical bulk density-of-states (BDOS) and surface density-of-states (SDOS) functions for tungsten. On the base of the ILEED intensity calculations we have estimated to what extend an EEL spectrum measured at some value of the primary electron energy E_{p}, should correspond either to the SDOS or to the BDOS. Also, the angular acceptance of a CMA has been used to separate the EEL spectra measured as a function of E_{p} which corresponded either to the [001] direction or to the [011] in parallel to the studied (001) surface. In the present paper we propose a procedure which combines the Electron Energy Loss Spectra (EELS) simulation method based on Bauer's theory [1,2] and the inelastic low energy diffraction (ILEED). If the standard simulation procedure is applied for tungsten an ambiguity would arise because the DOS function is very anisotropic and varies as a function of both the direction along the surface and the depth considered within several atomic layers. The application of ILEED has supplemented the simulation procedure with the method which identifies both the correspondence of a reciprocal-lattice vector to a measured EEL spectrum and the localization of a studied electron structure with regard to the distance from the surface.
Keywords
EN
Publisher

Year
Volume
81
Issue
1
Pages
67-72
Physical description
Dates
published
1992-01
received
1991-05-21
Contributors
author
  • Institute of Experimental Physics, University of Wrocław, Cybulskiego 36, 50-205 Wrocław, Poland
author
  • Institute of Experimental Physics, University of Wrocław, Cybulskiego 36, 50-205 Wrocław, Poland
author
  • Institute of Experimental Physics, University of Wrocław, Cybulskiego 36, 50-205 Wrocław, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv81z106kz
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