Effects of resolution in real and reciprocal spaces from a 2D detector at a high-energy synchrotron beamline. Issue 1 (2nd January 2018)

• Record Type: Journal Article
• Authors: Bernasconi, Andrea; Wright, Jonathan
• Is Part Of: Powder diffraction. Volume 33:Issue 1(2018)
• Page Start: 11
• Page End: 20
• Publication Date: 2018-01-02
• Subjects: 2D detector, -- pair distribution function, -- synchrotron, -- Q-resolution; Powder metallurgy -- Periodicals; Materials -- Analysis -- Periodicals; 620.1127
• DOI: 10.1017/S0885715617001166
• Languages: English
• ISSNs: 0885-7156

Abstract

Abstract : Different experimental conditions at a versatile high-energy beamline equipped with a two-dimensional detector have been compared for powder diffraction and pair distribution function (PDF) experiments. In particular, sample size and sample to detector distances have been evaluated on a standard sample, to evaluate their effects in both Q and real space. Two illustrative cases are also discussed. The average structure and local distortions in a BaTiO3 powder with 100 nm particle size show that spurious ripples in the PDF are suppressed by increased counting statistics. Effects of small amounts of a crystalline impurity phase on a SiO2 .Al2 O3 .Na2 O.CaO glass have been quantified.