Crystal truncation rods in kinematical and dynamical x-ray diffraction theories

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.245425· OSTI ID:20951561

Kaganer, Vladimir M ^[1]

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1. Paul-Drude-Institut fuer Festkoerperelektronik, Hausvogteiplatz 5-7, D-10117 Berlin (Germany)

Crystal truncation rods calculated in the kinematical approximation are shown to quantitatively agree with the sum of the diffracted waves obtained in the two-beam dynamical calculations for different reflections along the rod. The choice and the number of these reflections are specified. The agreement extends down to at least {approx}10{sup -7} of the peak intensity. For lower intensities, the accuracy of dynamical calculations is limited by truncation of the electron density at a mathematically planar surface, arising from the Fourier series expansion of the crystal polarizability.

• OSTI ID: 20951561
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 24; Other Information: DOI: 10.1103/PhysRevB.75.245425; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALS
ELECTRON DENSITY
POLARIZABILITY
REFLECTION
RODS
SERIES EXPANSION
SURFACES
X-RAY DIFFRACTION