Microstructure models

[creuzige]

As we talked over, I think one of the next areas to try and add code will be to include some of the microstructure. I know we have a few things still to iron out with the rest of the code, but it also seems like we can start working on this as well.

Here are the steps/parts I see:

On data entry tab

• Enter estimated grain size (assume spheres for now)
• Enter or read x-ray beam shape and oscillation (if used)
• Enter or read x-ray beam divergences

In script

• Calculate an interaction volume (with oscillation if used)
• Calculate the number of grains illuminated
• Calculate the pole figure coverage based on beam divergence (and oscillation if used)
• Calculate the number of grains diffracting (assume random texture?)
• Use number of grains diffracting in uncertainty calculation (Poisson count?, volume of material?)

Output

• Store information in a file for import (with .cif?)
• Schematic image of the x-ray system?

Thoughts/questions?

[cmschenck]

How much of Michael Cox's research is related to this?

[creuzige]

Michael's work was to see if there was an experimental technique that would result in diffraction data with a near random texture distribution. By changing the position of the diffraction vectors relative to the sample, we found we were able to do this.