On Wednesday, March 31st, GSECARS Beamline Scientists Peter Eng and Joanne Stubbs hosted a virtual tutorial on Crystal Truncation Rod Diffraction (CTR) for Atomic-Scale Surface Structure Measurement.
The tutorial presented the CTR technique at an introductory level. They provided a virtual tour of the 13 BM-C beamline and demonstrated the following:
- mounting and three-dimensional alignment of a hematite (Fe2O3) single crystal
- measuring CTR data
- reducing data
- constructing an atomic-scale interfacial structure model
- fitting the model to the data using the GenX software package (developed by Matts Björck – https://genx.sourceforge.io/)
After the tutorial, the data and model will be made available to participants who wish to try fitting themselves (see links below).
Tutorial Documents
- Intro to CTR (PDF, presented by Peter Eng)
- Analysis Presentation (PDF, presented by Joanne Stubbs)
- Fitting Exercise (PDF, presented by Joanne Stubbs)
- hematite_start.hgx file
