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About non-Gaussian behaviour of the Debye-Waller factor at largescattering vectors

Published online by Cambridge University Press:  03 September 2003

I. D. Feranchuk ,
A. A. Minkevich  and
A. P. Ulyanenkov
I. D. Feranchuk
Affiliation:
Byelorussian State University, F. Skariny Av. 4, 220050 Minsk, Republic of Belarus
A. A. Minkevich
Affiliation:
Byelorussian State University, F. Skariny Av. 4, 220050 Minsk, Republic of Belarus
A. P. Ulyanenkov*
Affiliation:
Bruker AXS, Östl. Rheinbrückenstr. 50, 76187 Karlsruhe, Germany
*
Alex.ulyanenkov@bruker-axs.de
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Abstract

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.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 24 , Issue 1 , October 2003 , pp. 21 - 26
Copyright
© EDP Sciences, 2003

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