Processing radial diffraction data with Maud
Ok, I'll assume that you have done your radial diffraction experiment, in angular dispersive geometry. You also have your calibration and data files ready for processing.
Outline of the tutorial
This tutorial was written 20 years ago. Please refer to the updated 2025 tutorial for MAUD which will teach you the basic MAUD usage, how to load the data from a Tiff image, and how to calibrate your analysis. The 2025 tutorial is up-to-date and comes with a training dataset.
The section below still includes relevant information, which may need to be updated, but could be useful.
- Maud Calibration
- Starting Maud
- Loading the data
- Setting up instruments parameters
- Restriction of the data interval
- Phases
- Save the file
- First Step: Manual Adjustment
- Incident intensity and first background parameter
- Global refinement
- Incident intensity, detector distance, and main backgrounds
- Incident intensity and peak profiles
- Individual backgrounds
- Detector re-calibration
- Material properties
- Putting it all together
- The perfect Calibration
- Check Orientations
- Importance of orientations in the refinement
- Setting orientations in MAUD
- Intensity calibration
- Polynomial angle intensity
- Refining parameters for the "Polynomial angle intensity" model
- Data processing
- Setting up Maud
- Setting up Maud
- Loading the data
- Setting up a material
- Unit cell and backgrounds
- Manual adjustment
- Refinement cycles...
- Do you have stress?
- Do you have texture?
- Tricks for background fitting New 10/2013 !
- Polynomial function
- Individual polynomial functions
- Interpolated background
- Stress Updated 10/2013 !
- Residual stress (lattice strain) analysis
- Applying residual stress
- Refining a stress tensor (Triaxial Stress or Moment Pole Stress)
- More advanced model: radial diffraction in DAC
- Lattice preferred orientations Updated 10/2013 !
- Displaying LPO
- Preferred orientation models
- E-WIMW: no symmetry
- E-WIMW: symmetry
- Advanced topics
- Define the compression direction
- Data coverage in axial and radial diffraction experiment
- Finding out orientation coverage in Maud
- Locating the compression direction
- Fixing things out
- Pole figures and data coverage