Beamline I12 is being constructed to offer monochromatic and polychromatic ("white beam") diffraction techniques.
Polychromatic diffraction using the white beam is carried out in the energy dispersive mode. It allows fast strain mapping and retrieves structural information in geometries with confined diffraction angles, such as environmental cells or high-pressure cells.
Monochromatic diffraction techniques will be used for structure refinement, crystallographic texture determination and high resolution strain measurements. Monochromatic diffraction using a two-dimensional detector can map a wide section through reciprocal space simultaneously, particularly at short wavelengths.
Engineering and Material Science Applications
Chemical Engineering Applications
Earth and Environmental Science Applications
LaB6 diffraction standard
Fig: 2D-diffraction pattern from NIST LaB6 powder diffraction standard. Image taken with Pixium flat panel detector, beam energy approx. 80keV
Fig: 1D-diffraction pattern from NIST LaB6 powder diffraction standard. Converted from 2D diffraction pattern
Detection and Quantification of Passivation Layers in Electrochemical Inert Anodes by In Situ and Ex Situ Diffraction
M R Rowles, M J Styles*, N V Y Scarlett, I C Madsen, D P Riley*, G A Snook, A Urban, K Mc Gregor (CSIRO, Australia and *University of Melbourne, Australia)
Fig: Metallographic slice through a used anode material
Fig: Surface plot of EDXD spectra taken as a function of time showing phase changes in the inert anode. Data obtained with 23 element EDXD detector
High Energy Transmission Micro-Beam Laue Diffraction
F Hoffman, A. Korsunsky, N Baimpas, B Abbey, M Drakopoulos*, L Connor* (University of Oxford, *Diamond Light Source)
Fig: White beam diffraction pattern of Silicon single crystal in 0010 orientation. Pattern taken with large area 2D detector.
Diamond Light Source is the UK's national synchrotron science facility, located at the Harwell Science and Innovation Campus in Oxfordshire.
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