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Fundamentals of X-ray Spectrometric Analysis Using Low-Energy Electron Excitation

  • K. J. Romand (a1), F. Gaillard (a1), M. Charbonnier (a1) and D. S. Urch (a1)

Extract

In the field of material analysis and characterization interest has considerably shifted over the last few decades from bulk to surface and very thin film problems. At the present state a wide range of surface analytical techniques - such as x-ray photoelectron (XPS), Auger electron (AES), secondary ion mass (SIMS), ion scattering (ISS) spectroscopies - have become available but every one of them exhibits specific analytical features and information content. Within the context of this paper the main parameter to be considered is the information depth i.e the layer thickness from which the majority of information-bearing particles escape and hence are detected. For XPS and AES, this parameter is associated with the mean-free path of photoelectrans or Auger electrons and typically is in the range from 0.5 to 4 nm. In SIMS the ejected secondary ions are emitted from the outer 2 or 3 atomic layers (i.e. from about 1 nm) while the single-collision binary process occuring in ISS is restricted to atoms from the top most atomic layer (0.2-0.3 nm).

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Fundamentals of X-ray Spectrometric Analysis Using Low-Energy Electron Excitation

  • K. J. Romand (a1), F. Gaillard (a1), M. Charbonnier (a1) and D. S. Urch (a1)

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