Longitudinal coherence function in X-ray imaging of crystals

DOI: 10.1364/OE.17.015853
PMID: 19724585

Authors: Steven J. Leake (University College London) , Marcus C. Newton (University College London) , Ross Harder (Argonne National Laboratory) , Ian K. Robinson (University College London; Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Optics Express , VOL 17 (18) , PAGES 15853-15859

State: Published (Approved)
Published: August 2009

Abstract: The longitudinal coherence function at the Advanced Photon Source beamline 34-ID-C has been measured by a novel method and the coherence length (?L) determined to be, ?L = 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.

Subject Areas: Technique Development, Physics

Facility: 34-ID-C at APS

Added On: 12/10/2009 08:36

Discipline Tags:

Physics Technique Development - Physics

Technical Tags: