Tamas Dragos schrieb:
Perhapse I did not make myself clear so I’ll just try again. I know
how to set up the wavelengths in FullProf and I also know how to setup
the ratio, but a ratio of 0.5 seems so far away from the real physical
value. It is not so easy to calculate a mean wavelength and I do not
think that FullProf just takes the simple mean of the two wavelengths
meaning wavelenght1 + wavelength 2 / 2. So I want to know if I wanna
calculate the values for the cell parameters with another method, how
do I do to find out which value FullProf uses as a mean for the
kalpha1 and kalpha2 wavelenghts.
There seems to be a misconception here: Fullprof does not use an average
wavelength; at least not for the standard applications, if at all. If
you give two different wavelengths, the programm will calculate two
corresponding peaks for any given Bragg reflection, using the intensity
ratio given.
Daniel Toebbens
Institute of Mineralogy and Perography
University of Innsbruck, Austria
