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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 18 — Aug. 31, 2009
  • pp: 15853–15859

Longitudinal coherence function in X-ray imaging of crystals

Steven J. Leake, Marcus C. Newton, Ross Harder, and Ian K. Robinson  »View Author Affiliations

Optics Express, Vol. 17, Issue 18, pp. 15853-15859 (2009)

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The longitudinal coherence function at the Advanced Photon Source beamline 34-ID-C has been measured by a novel method and the coherence length (ξL) determined to be, ξL = 0.66 ± 0.02µm. Three dimensional Coherent X-ray Diffraction (CXD) patterns were measured for multiple Bragg reflections from two Zinc Oxide (ZnO) nanorods with differing aspect ratios. The visibility of fringes corresponding to the 002 crystal direction for each reflection were found to be different and used to map the coherence function of the incident radiation. Partial coherence was found to be associated with amplitude ‘hot’ spots in three dimensional reconstructions of the crystal structure.

© 2009 OSA

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(100.5070) Image processing : Phase retrieval
(110.7440) Imaging systems : X-ray imaging

ToC Category:
Coherence and Statistical Optics

Original Manuscript: May 14, 2009
Revised Manuscript: June 18, 2009
Manuscript Accepted: June 19, 2009
Published: August 21, 2009

Steven J. Leake, Marcus C. Newton, Ross Harder, and Ian K. Robinson, "Longitudinal coherence function in X-ray imaging of crystals," Opt. Express 17, 15853-15859 (2009)

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