Advertisement

Patterson Functions and Diffuse Scattering

  • Brent Fultz
  • James Howe
Part of the Graduate Texts in Physics book series (GTP)

Abstract

Although diffraction can be understood as wave interference involving wave scattering from individual atoms, in kinematical theory the diffraction intensity can also be understood as contributions from pairs of atoms, weighted by phase factors. The Patterson function is defined, and used to describe disorder from atom displacements and chemical disorder. The diffuse scattering from these types of disorder is explained. Local correlations in atomic displacements and short-range order are used to explain modulations in the diffuse scattering. This chapter explains how to obtain the pair distribution function by Fourier transformation of the diffraction pattern. Diffraction methods are extended for measuring structural features of amorphous materials and measuring structures of larger objects by small-angle scattering. The basic methods for analyzing small-angle scattering experiments are presented.

Keywords

Radial Distribution Function Bragg Peak Diffract Intensity Diffract Wave Diffuse Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Brent Fultz
    • 1
  • James Howe
    • 2
  1. 1.Dept. Applied Physics and Materials ScienceCalifornia Institute of TechnologyPasadenaUSA
  2. 2.Dept. Materials Science and EngineeringUniversity of VirginiaCharlottesvilleUSA

Personalised recommendations