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2019
Powder X-ray diffraction is an essential partner to single-crystal X-ray diffraction because it is applied to a bulk solid rather than a selected single crystal. Powder diffraction can be viewed as a collection of simultaneous single-crystal measurements from a large number of crystals in all orientations.
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Powder X-ray diffraction is an essential partner to single-crystal X-ray diffraction because it is applied to a bulk solid rather than a selected single crystal. Powder diffraction can be viewed as a collection of simultaneous single-crystal measurements from a large number of crystals in all orientations.
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Simulation of X-ray powder diffraction
Journal of Chemical Education, 1992142. Bits and pieces, 48. A program that simulates the entire procedure of the analysis of X-ray powder diffraction.
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X-Ray Powder Diffraction Camera
Journal of Scientific Instruments, 1944An X-ray powder camera is described which is designed for speed of working. This is achieved (at the cost of certain disadvantages) by improving factors that control exposure time and by eliminating the necessity of any adjustments and of any calibration when these have once and for all been carried out. The camera is applicable to the analysis of soil
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Femtosecond X-Ray Powder Diffraction
Conference on Lasers and Electro-Optics 2010, 2010Transient electronic charge density maps with 30 picometer spatial and 100 femtosecond temporal resolution gained from x-ray powder diffraction experiments unravel for the first time a concerted electron and proton transfer in hydrogen-bonded (NH 4 ) 2 SO 4 crystals.
Flavio Zamponi +4 more
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Accuracy in Quantitative X-ray Powder Diffraction Analyses
Advances in X-ray Analysis, 1994Abstract Accuracy, or how well a measurement conforms to the true value of a parameter, is important in XRD analyses in three primary areas, 1) 26 position or d-spacing; 2) peak shape; and 3) intensity. Instrumental factors affecting accuracy include zero-point, axial-divergence, and specimen- displacement errors, step size, and even ...
David L. Bish, Steve J. Chipera
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2019
X-ray powder diffraction (XRPD) techniques are used to characterize samples in the form of loose powders, aggregates of finely divided material or polycrystalline specimens. This article provides a detailed account of XRPD. It begins with a discussion on XRPD instrumentation and the techniques used to characterize samples.
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X-ray powder diffraction (XRPD) techniques are used to characterize samples in the form of loose powders, aggregates of finely divided material or polycrystalline specimens. This article provides a detailed account of XRPD. It begins with a discussion on XRPD instrumentation and the techniques used to characterize samples.
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Synchrotron X-Ray Powder Diffraction
MRS Bulletin, 1987X-ray powder diffraction is one of the most widely used techniques by scientists engaged in the synthesis, analysis, and characterization of solids. It is estimated that there are now about 25,000 users throughout the world, of which about one third are in the United States.
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X-Ray Powder Diffraction Patterns As Random Fractals
Advances in X-ray Analysis, 1995The concept of fractals (or fractional dimensions), although known earlier, was formalized theoretically and given that name in 1967 by Mandelbrot. A fractal is some object, whether mathematically constructed or observed in the physical world, that exhibits scale in variance—that is, it looks essentially the same at all scales, or over some range of ...
Dana T. Griffen, Kim R. Sullivan
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X-ray powder diffraction data for nine analgesics
Talanta, 1991X-Ray powder diffraction data for nine analgesics have been obtained by using a powder diffractometer. The results obtained by using the McCreery and Byström-Asklund methods of sample loading were averaged and tabulated in terms of the lattice spacings and the relative line intensities.
J E, Kountourellis +3 more
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Diffraction and the X-Ray Powder Diffractometer
2001Materials are made of atoms. Knowledge of how atoms are arranged into crystal structures and microstructures is the foundation on which we build our understanding of the synthesis, structure and properties of materials. There are many ways for measuring chemical compositions of materials, and methods based on inner-shell electron spectroscopies are ...
Brent Fultz, James M. Howe
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