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Geometrical factors for correction of intensities in Seemann–Bohlin diffractometry

Published online by Cambridge University Press:  10 January 2013

R. Černý  and
V. Kupčík
R. Černý
Affiliation:
Faculty of Mathematics-Physics, Charles University, Ke Karlovu 5, 121 16 Prague 2, Czechoslovakia
V. Kupčík
Affiliation:
Institute of Mineralogy and Crystallography, University of Göttingen, V. M. Goldschmidt-str. 1, 3400 Göttingen, Germany
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Abstract

The correct formulas for geometrical factors for correction of diffracted intensities in Seemann-Bohlin diffractometry were tested. A Huber 653 goniometer, gold and titanium nitride layers, white tin, and rutile as specimens were used in the reflection mode. A Huber 642 goniometer and olivine as a specimen were used in the transmission mode. It was found that, due to a variable specimen-detector distance during 2θ scan, the variable efficiency of the Soller slits in the diffracted beam must be taken into account. The model describing this effect analytically is presented. As a final test the structures of white tin, rutile, and olivine were refined from the measured data corrected for different factors.

Type
Research Article
Information
Powder Diffraction , Volume 8 , Issue 1 , March 1993 , pp. 7 - 13
Copyright
Copyright © Cambridge University Press 1993

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