I have a little question concerning monochromator correction (please
excuse if the question seems rather simple - our local
"Rietveld-dicitionary" seems to be on vacancies).
The problem: We have been changing some parameters on our system and
therefore we are again busy with standard-profile refinements. We have
included monochromator-correction in our calculations because we have a
graphite monochromator in the beamline as follows:
tube - slit - sample - slit - graphitemono. - slit - detector.
Recently, a colleague has tried to refine Au standard powder and he
observed, that he will gain a rather high Bragg-R-value (ca. 13%) when
including monochromator correction and about 1.2% (which is the value
we expect for this simple problem) when skipping it.
The question: In the above given beam-line, will it be necessary to
correct the intensity for the monochromator-LoPo-effect?
OR IS IT POSSIBLE, that we allready get corrected data from the
diffractometer which is a Philips (PW 1710 controller and PC-APD software)?
Maybe someone can help me with this? Thanks in advance!
Carsten