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A calculation of γ(r), the correlation function which gives the X‐ray scattering of a cubic object of uniform density, is given for the full range of r. A new method, which can be applied to other systems, is used. The function γ(r) and its first derivative are everywhere continuous, but...
An experimental method is described which enables the inelastically scattered X‐ray component to be removed from diffractometer data prior to radial density function analysis. At each scattering angle an energy spectrum is generated from a Si(Li) detector combined with a multi‐channel...
A ψ‐ϕ goniometer with two axes of rotation, driven by stepping motors, was designed as an attachment for a horizontal θ/2θ goniometer. By means of this arrangement it is possible to measure strains and compute stresses in single crystals and in separate crystals of a bicrystal or a...
A computer program is described which produces two‐dimensional disordered structures from short‐range‐order parameters. It is primarily aimed at interactive work with small computers and it gives extra facilities with respect to existing programs. An application to the study of partly...
The sense of the spontaneous polarization Ps for ferroelectric LiH3(SeO3)2 has been related to the absolute atomic arrangement with the use of anomalous scattering of neutrons from 6Li. The polar axis is almost parallel to the crystallographic c* axis. The absolute sense of Ps is antiparallel to...
An analysis of the small‐angle scattering problem based on Shannon sampling is presented. It is shown that this approach leads to an accurate assessment of the information contained in a given data set and rigorous estimates of the errors inherent in the parameters derived therefrom.
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