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PCA-Based Analysis of X-Ray-Excited Auger Spectra from Non-ordered Ag(110)

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Czechoslovak Journal of Physics Aims and scope

Abstract

Principal-components analysis (PCA) followed by factor analysis enables one to decompose the structure of Auger lines originating from large effects such as energy shifts induced by chemical effects. The aim of the present contribution is to show that PCA can also be effectively used for detection of composed structure in a set of Auger spectra even if the observed changes in line shape are very subtle. The analysed set of X-ray-excited MNN Auger spectra from Ag(110) shows a clear correlation between peak shifts and peak widths. This correlation can be explained as a result of the composed structure of the recorded Auger lines. It is suggested that the resultant Auger lines may consist of a number of constituents, each referred to Ag atoms differing in the value of their co-ordination number.

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Authors and Affiliations

  1. Akademia Techniczno-Rolnicza, Instytut Matematyki i Fizyki, ul. Kaliskiego 7, 85-796, Bydgoszcz, Poland

    R. Siuda, M. Cyrankiewicz & G. Balcerowska

  2. Fachbereich Physik, Universität Kassel, Heinrich-Plett-Strasse 40, D-34132, Kassel, Germany

    H. Engelhard & A. Goldmann

Authors
  1. R. Siuda
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  2. H. Engelhard
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  3. A. Goldmann
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  4. M. Cyrankiewicz
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  5. G. Balcerowska
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Siuda, R., Engelhard, H., Goldmann, A. et al. PCA-Based Analysis of X-Ray-Excited Auger Spectra from Non-ordered Ag(110). Czechoslovak Journal of Physics 53, 63–67 (2003). https://doi.org/10.1023/A:1022307721068

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  • DOI: https://doi.org/10.1023/A:1022307721068

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