GSAS/EXPGUI demo: CW Neutron Alumina Example
Presentation Goal
- Show how to set up and perform a Rietveld refinement with GSAS using the EXPGUI graphical user interface.
- Format: a RealPlayer video showing the computer screen to accompany a set of web pages (that are also available as a .pdf file).
Tutorial Outline
- Introduction
- Create a GSAS Experiment File
- Adding a phase
- Specifying Powder Diffraction Data (Adding a Histogram)
- Changing the Background Function
- Initial Fitting: Refine Scale Factor and Background
- Plotting the Initial Fit
- Fitting the Unit Cell
- Fitting the Diffractometer Zero Correction
- Initial Fitting of Profile Parameters
- Group Uiso parameters & Refine coordinates and Overall Uiso
- Finishing Up
Links
- Tutorial web pages
- Tutorial as a 32 page .pdf document
- FlashMovie presentation with index (best viewed with 1024x768 or better screen resolution)
- FlashMovie file (800x600 pixels)
- APS Powder diffraction crystallography instructional materials overview