matsmcfly I have some data collected on a instrument (D2 Phaser) with non-monochromated source, what is the correct syntax to use when writing the input file to account for Ka1, Ka2 and Kbeta wavelengths? Also, I might be mistaken, but I am under the impression that the way these instruments workis that the goniometer radius changes over 2Theta i.e. the sample moves vertically during the scan to allow more 2Theta coverage in a more compact unit. If any other people with experience of the D2 benchtop diffractometer could advise me on this, it would be greatly appreciated. Thanks
rowlesmr I think that the detector/source pivot on a point, and the sample moves down such that the radius stays constant. IIRC from the last conference I went to... Matthew
matsmcfly rowlesmr:1596186177 wrote I think that the detector/source pivot on a point, and the sample moves down such that the radius stays constant. Matthew Thats great, thank you.
johnsoevans For the kbeta part of your question see: http://topas.dur.ac.uk/unb/forum.php?req=thread&id=229 You can just add a kbeta line to the emission profile. However this can cause problems due to beta peaks being far from alpha peaks. If this is an issue then you can define a second str with it's own emission profile.
rowlesmr That adding a str with it's own emission profile is a neat trick, and something i didn't realise you could do until recently. I'm bookmarking that.