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Long term stability of a modern powder diffractometer

  • Markus Wunschel (a1), Robert E. Dinnebier (a1) and Sander van Smaalen (a1)


The characteristics of the (101) peak of α-quartz and the (104) peak of the NIST SRM 1976 alumina flat plate standard have been measured in dependence of time for 60 h with Cu-Kα1 radiation in Bragg-Brentano geometry with a Philips X’Pert diffractometer equipped with a primary Ge(111) monochromator. It was found that the reproducibility of the peak position and the peak shape falls well in the ±3σ range, whereas the peak intensity strongly depends on the power history of the X-ray generator and the temperature of the diffraction system. The effects on Rietveld refinements are discussed and recommendations are given for optimized data collection.



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Bish, D. L., and Post, J. E. (1989). “Modern Powder Diffraction,” Reviews in Mineralogy, Vol. 20, Mineralogical Society of America, ISBN 0-939950-24-3.
Dinnebier, R. E., and Finger, L. W. (1998). “GUFI 5.0,” Z. Krist. Suppl. ZZZZZZ 15, 148.
Finger, L. W., Cox, D. E., and Jephcoat, A. P. (1994). “A correction for powder diffraction peak asymmetry due to axial divergence,” J. Appl. Crystallogr. JACGAR 27, 892900. acr, JACGAR
Parrish, W. (1983). “Fundamentals of X-ray powder diffractometry: prerequisites for successful computer automation,” lecture notes of a workshop on automated data collection strategies for obtaining good powder diffraction data at the American Crystallographic Association 32nd Annual Denver X-ray Conference Combined Meeting, 1–5 August 1983, Snowmass, CO.
Rietveld, H. M. (1969). “A Profile Refinement Method for Nuclear and Magnetic Structures,” J. Appl. Crystallogr. JACGAR 2, 6571. acr, JACGAR
Rodriguez-Carvajal, J. (1990). Abstracts of the Satellite Meeting on Powder Diffraction of the XV Congress of the IUCr, Toulouse, France, p. 127.
Sonneveld, E. J., and Delhez, R. (1996). “ProFit Windows Software for Profile Analysis,” Philips Analytical X-Ray, Philips Electronics N. V., program version 1.0 of 1996.

Long term stability of a modern powder diffractometer

  • Markus Wunschel (a1), Robert E. Dinnebier (a1) and Sander van Smaalen (a1)


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