Results 211 to 220 of about 118,334 (258)

Simulation of X-ray powder diffraction

Journal of Chemical Education, 1992
142. 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 data for nine analgesics

Talanta, 1991
X-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, C K, Markopoulou, F A, Underwood, B, Chapman   +3 more
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X-Ray Powder Diffraction Camera

Journal of Scientific Instruments, 1944
An 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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Accuracy in Quantitative X-ray Powder Diffraction Analyses

Advances in X-ray Analysis, 1994
Abstract 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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Synchrotron X-Ray Powder Diffraction

MRS Bulletin, 1987
X-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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Diffraction and the X-Ray Powder Diffractometer

2001
Materials 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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X-Ray Powder Diffraction (XRPD)

2016
X-ray powder diffraction (XRPD) is an important tool to determine the phase composition of archaeological ceramics. In principle, a thin beam of X-rays incident to a lattice plane of crystalline matter is scattered in specific directions and angles depending on the distances of atoms. This allows determination of characteristic unit cell dimensions and
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Synchrotron X-Ray Powder Diffraction

2012
The large breadth of the Synchrotron Radiation X-ray Powder Diffraction (SR-XRPD) technique inevitably requires that we make a certain number of choices in its discussion. Assuming you already have some knowledge of SR and XRPD, we explore the peculiar features that arise from combining them.
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X-RAY ABSORPTION AND DIFFRACTION | X-Ray Diffraction | Powder

2005
S. Garcia-Granda, J.M. Montejo-Bernardo
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The Renaissance of X-Ray Powder Diffraction

1983
Researchers have recognized the power of X-ray powder diffraction techniques since the first powder experiment in 1913. Early workers used powder diffraction to qualitatively distinguish phases and quantitatively analyze them1. However it was not until the 1938 paper of Hanawalt, Rinn and Frevel2 that a general procedure for characterizing powders by ...
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