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Total scattering experiments on glass and crystalline materials at the ESRF on the ID11 Beamline

Published online by Cambridge University Press:  22 December 2014

Andrea Bernasconi ,
Jonathan Wright  and
Nicholas Harker
Andrea Bernasconi*
Affiliation:
ESRF – The European Synchrotron – Grenoble, France
Jonathan Wright
Affiliation:
ESRF – The European Synchrotron – Grenoble, France
Nicholas Harker
Affiliation:
ESRF – The European Synchrotron – Grenoble, France
*
a) Author to whom correspondence should be addressed. Electronic mail: andrea.bernasconi@esrf.fr
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Abstract

ID11 is a multi-purpose high-energy beamline at the European Synchrotron Radiation Facility (ESRF). Owing to the high-energy X-ray source (up to 140 keV) and flexible, high-precision sample mounting which allows small sample–detector distances to be achieved, experiments such as total scattering in transmission geometry are possible. This permits the exploration of a wide Q range and so provides high real-space resolution. A range of samples (glasses and crystalline powders) have been measured at 78 keV, first putting the detector as close as possible to the sample (~10 cm), and then moving it vertically and laterally with respect to the beam in order to have circular and quarter circle sections of diffraction rings, with consequent Q MAX at the edge of the detector of about 16 and 28 Å−1, respectively. Data were integrated using FIT2D, and then normalized and corrected with PDFgetX3. Results have been compared to see the effects of Q-range and counting statistics on the atomic pair distribution functions of the different samples. A Q of at least 20 Å−1 was essential to have sufficient real-space resolution for both type of samples while statistics appeared more important for glass samples rather than for crystalline samples.

Keywords

PDFsynchrotronglasscrystalline
Type
Technical Articles
Information
Powder Diffraction , Volume 30 , Supplement S1 , June 2015 , pp. S2 - S8
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Copyright
Copyright © International Centre for Diffraction Data 2014 

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