kunyang
Hello all!
I have a lot of TOF data for residual stresses analysis for bulk ceramics. We used CeO2 powder as standard to calibrate the diffractometer. The question here is:
1. Should we do "zero_error" and "Specimen_Displacement" during standard CeO2 analysis?
2. Later when we go to refine our samples, except fixing the diffractometer parameters, should we fix the values of "zero_error" or "Specimen_Displacement" obtained in standard CeO2 to do samples analysis?
Hope someone can remove my doubts. Thank you very much. ;)
Regards,
Kunyang
rowlesmr
Do the corrections behind zero_error and specimen_displacement actually mean anything with TOF data?
If you can justify such corrections on your data, then apply them.
If you're talking about the generic prewritten macros, then I'd say, no, they can't be applied, as the geometric assumptions behind them are only for bragg-brentano, nothing else.
johnsoevans
Just to confirm Matthew's point. zero and sample displacement macros should not be applied to tof data as they have no real physical meaning. There is a "zero" as part of the tof calibration macro (detector effect) which can be refined as part of your calibration process. You should really check this type of thing with the instrument scientist for the machine you used.