Longitudinal coherence function in X-ray imaging of crystals
Longitudinal coherence function in X-ray imaging of crystals
The longitudinal coherence function at the Advanced Photon Source beamline 34-ID-C has been measured by a novel method and the coherence length (xi(L)) determined to be, xi(L) = 0.66 +/- 0.02 mu m. 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.
15853-15859
Leake, Steven J.
4a7e3727-00b4-46dc-934a-00ccdcecb17a
Newton, Marcus
fac92cce-a9f3-46cd-9f58-c810f7b49c7e
Harder, Ross
05fa0b22-abf6-4f59-9823-1748e879e27c
Robinson, Ian K.
ce840296-d065-463a-9986-573de845a081
31 August 2009
Leake, Steven J.
4a7e3727-00b4-46dc-934a-00ccdcecb17a
Newton, Marcus
fac92cce-a9f3-46cd-9f58-c810f7b49c7e
Harder, Ross
05fa0b22-abf6-4f59-9823-1748e879e27c
Robinson, Ian K.
ce840296-d065-463a-9986-573de845a081
Leake, Steven J., Newton, Marcus, Harder, Ross and Robinson, Ian K.
(2009)
Longitudinal coherence function in X-ray imaging of crystals.
Optics Express, 17 (18), .
(doi:10.1364/OE.17.015853).
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 (xi(L)) determined to be, xi(L) = 0.66 +/- 0.02 mu m. 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.
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Published date: 31 August 2009
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Local EPrints ID: 451877
URI: http://eprints.soton.ac.uk/id/eprint/451877
ISSN: 1094-4087
PURE UUID: 16d7e4c5-0e2e-43bd-b573-dea3cb8868ae
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Date deposited: 02 Nov 2021 17:42
Last modified: 17 Mar 2024 03:33
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Author:
Steven J. Leake
Author:
Ross Harder
Author:
Ian K. Robinson
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