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Crystals, X-rays and ProteinsComprehensive Protein Crystallography$
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Dennis Sherwood and Jon Cooper

Print publication date: 2010

Print ISBN-13: 9780199559046

Published to Oxford Scholarship Online: January 2011

DOI: 10.1093/acprof:oso/9780199559046.001.0001

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Diffraction by one‐dimensional obstacles

Diffraction by one‐dimensional obstacles

7 Diffraction by one‐dimensional obstacles
Crystals, X-rays and Proteins

Dennis Sherwood

Jon Cooper

Oxford University Press

This chapter demonstrates important principles of diffraction using one-dimensional obstacles which can be described elegantly using delta functions. It describes the essential properties of the Fourier transforms of such obstacles to give a sound understanding of the nature of reciprocal space. It emphasises and illustrates the importance of the convolution product in describing a real crystal lattice and its Fourier transform, or diffraction pattern using a number of clear diagrams. The chapter then presents the reciprocal relationship between the separation of the diffraction maxima in Fourier space and the separation of the motifs in the real lattice as well as the effect of the motif on modulating the intensities of diffraction maxima.

Keywords:   diffraction, one dimensional objects, slits, Young's experiment, narrow slits

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