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We discuss the importance of the probe coherence volume in the interpretation of scattering data. The availability of low emittance synchrotron radiation sources capable of producing highly monochromatic x-ray beams prompts one to consider the effects of partial beam coherence in the interpretation of diffraction experiments. It calls into question the analysis of data by deconvolution at the level of intensities. When the coherence volume approaches that of microscopically ordered regions in the sample of new effects may be anticipated. For example, under strong absorption the intensity dependance on the incident energy may be used to locate the source of scattering. Two examples are given.

Additional information

Authors: BERNHOEFT N, Institut Laue Langevin, Grenoble (FR);HEISS A, Institut Laue Langevin, Grenoble (FR);LANGRIDGE S, ITU Karlsruhe (DE);LANDER G H, ITU Karlsruhe (DE);STUNAULT A, European Synchrotron, Grenoble (FR);WERMEILLE D, European Synchrotron, Grenoble (FR);VETTIER C, European Synchrotron, Grenoble (FR);HUTH M, University of Mainz (DE);JORDAN M, University of Mainz (DE);ADRIAN H, University of Mainz (DE)
Bibliographic Reference: Article: Physical Review Letters, 1998
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