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Instrumentation has been developed for collection of three‐dimensional X‐ray and neutron diffraction data at temperatures below the boiling point of liquid nitrogen. A closed‐cycle two‐stage refrigerator has been mounted on the ϕ shaft of a four‐circle goniometer. The sample crystal is attached...
C12H8BrF, Mr = 251.1, monoclinic, P21/c, a = 9.78(2), b = 13.33(2), c = 17.69(3) Å, β = 116.3(5)°, U = 2068.13(15) Å3, Z = 8, Dx = 1.60 Mg m−3, Mo Kα radiation, λ = 0.71069 Å, μ = 38.42 mm−1, F(000) = 992, T = 293K. Intensity data were only observable to a resolution of 1.1 Å. 392 reflections...
The design parameters of an X‐ray spectrometer for inelastic scattering studies are discussed, and a comparison is made of the flux available from various photon sources in the X‐ray region. It is shown that a conventional X‐ray sealed tube can yield a relatively high useful flux, provided...
The resolution of a time-of-flight small-angle scattering spectrometer is complicated because many wavelengths contribute to the intensity for a particular scattering vector. The resolution function varies according to the wavelength distribution as well as with collimation. A rigorous...
The accuracy of stress measurement using the X-ray diffraction method relies on both the accuracy of peak location and the goodness-of-fit of the assumed linear model that relates the peak shift to the specimen orientation. In the absence of systematic effects it is the uncertainty in peak...
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