国际晶体学联合会
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作者:Andrew Senesi , Byeongdu Lee
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 2), pp.565-577
摘要:Herein, a general method to calculate the scattering functions of polyhedra, including both regular and semi-regular polyhedra, is presented. These calculations may be achieved by breaking a polyhedron into sets of congruent pieces, thereby reducing computation time by taking adv...
作者:Dominik Kriegner , Zden&ecaron , k Mat&ecaron ...
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 2), pp.613-618
摘要:A common way of speeding up powder diffraction measurements is the use of one- or two-dimensional detectors. This usually goes hand in hand with worse resolution and asymmetric peak profiles. In this work the influence of a straight linear detector on the resolution function...
作者:Colin Wade , Nicolas Barriè , re ...
来源:[J].J Appl Crystallogr, 2016, Vol.49 (Pt 2), pp.606-615
摘要:The Laue lens is an emerging technology that uses crystal diffraction to concentrate gamma-rays. The Darwin model describes diffraction in mosaic crystals at high energies (>50 keV) and is the basis for assessing the throughput of a Laue lens. While the Darwin model h...
作者:Jordan M. Cox , Ian M. Walton , Cassidy A. Benson ...
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 2), pp.578-581
摘要:In situ single-crystal diffraction experiments provide researchers with the opportunity to study the response of crystalline systems, including metal–organic frameworks and other nanoporous materials, to changing local microenvironments. This paper reports a new environmenta...
作者:Andrá , s Wacha
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 6), pp.1843-1848
摘要:In order to make the most of the low photon flux in laboratory small-angle X-ray scattering instruments, the experimental geometry has to be chosen carefully, with special stress on the beam-shaping system. The optimum collimation scheme should enable accurate measurements over t...
作者:Johan Bergenholtz , Jeanette Ulama , Malin Zackrisson Oskolkova
来源:[J].J Appl Crystallogr, 2016, Vol.49 (Pt 1), pp.47-54
摘要:A laboratory-scale small-angle X-ray scattering instrument with pinhole collimation has been used to assess smearing effects due to instrumental resolution. A new, numerically efficient method to smear ideal model intensities is developed and presented. It allows for directly usi...
作者:Hadi Pirgazi , Krzysztof Glowinski , Adam Morawiec ...
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 6), pp.1672-1678
摘要:Five macroscopic boundary parameters can be extracted from three-dimensional orientation maps. Serial sectioning, which includes consecutive steps of material removal, and electron backscatter diffraction (EBSD) measurement were employed to extract a stack of two-dimensional sect...
作者:Maxime Dupraz , Guillaume Beutier , David Rodney ...
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 3), pp.621-644
摘要:Crystal defects induce strong distortions in diffraction patterns. A single defect alone can yield strong and fine features that are observed in high-resolution diffraction experiments such as coherent X-ray diffraction. The case of face-centred cubic nanocrystals is studied nume...
作者:Antonios Vamvakeros , Simon D. M. Jacques , Marco Di Michiel ...
来源:[J].J Appl Crystallogr, 2015, Vol.48 (Pt 6), pp.1943-1955
摘要:This paper reports a simple but effective filtering approach to deal with single-crystal artefacts in X-ray diffraction computed tomography (XRD-CT). In XRD-CT, large crystallites can produce spots on top of the powder diffraction rings, which, after azimuthal integration and tom...

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