Eur. Phys. J. Appl. Phys.
Volume 24, Number 1, October 2003
|Page(s)||21 - 26|
|Section||Surfaces, Interfaces and Films|
|Published online||03 September 2003|
About non-Gaussian behaviour of the Debye-Waller factor at large scattering vectors
Byelorussian State University, F. Skariny Av. 4, 220050 Minsk,
Republic of Belarus
2 Bruker AXS, Östl. Rheinbrückenstr. 50, 76187 Karlsruhe, Germany
Corresponding author: Alex.email@example.com
Revised: 18 June 2003
Accepted: 19 June 2003
Published online: 3 September 2003
The modified expression for Debye-Waller factor is derived for the scattering of X-rays from rough surfaces and interfaces. For the large values of scattering vector, the non-Gaussian behaviour of this factor is predicted. This effect can be essential for interpretation of X-ray reflectivity from very rough surfaces and high-order X-ray diffraction data. The experimental X-ray reflectivity measurements are interpreted using the derived expression.
PACS: 61.10.Dp – Theories of diffraction and scattering / 61.10.-i – X-ray diffraction and scattering / 61.10.Kw – X-ray reflectometry (surfaces, interfaces, films)
© EDP Sciences, 2003
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