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Observation of interference effects in coherent diffraction of nanocrystals under X-ray standing-wave illumination

DOI: 10.1107/S0909049507040228 DOI Help
PMID: 17960028 PMID Help

Authors: Piotr Gryko (London Centre for Nanotechnology, U.K.) , Meng Liang (Department of Physics, University of Illinois, USA.) , Ross Harder (London Centre for Nanotechnology, Department of Physics and Astronomy, U.K) , Ian K. Robinson (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Synchrotron Radiation , VOL 14 , PAGES 471 - 476

State: Published (Approved)
Published: November 2007

Abstract: Coherent X-ray diffraction is a useful technique for understanding the structure of compact objects including those which can be represented as phase objects. X-rays are highly penetrating and have wavelengths very close to atomic spacing. In this work, gold nanocrystals (on a reflecting substrate) were imaged at the Advanced Photon Source and found to produce a novel double diffraction pattern. Simulations were carried out to explain the experimental diffraction pattern in terms of reflection of the incident beam from the substrate to produce a standing wave. The experimental data were then phased to produce a two-dimensional real-space image of the gold. It is expected that the standing-wave illumination may be a useful tool to aid the convergence of the phasing algorithms for nanocrystals.

Journal Keywords: Coherence; Standing Waves; Oversampling; Nanocrystal.

Subject Areas: Chemistry

Facility: APS

Added On: 27/07/2010 07:48

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