Dear Zu,
Here is Bob Van Dreele's answer to this question I asked him a few weeks
ago.
I've not yet solved this problem for my Inel detector.
Bye,
Pierre-Nicolas
> I downloaded your software GSAS a few days ago and tried to use it.
> I only use it to do Rietveld treatment of XRay data. I'd like to know
>what kind of files i need to use as "power instrument parameter file". I'm
>using an Inel multichannel diffractometer which needs calibration files ;
>These .cal files don't look like the .tof files of the examples
>subdirectory and I don't know what I have to do.
Dear Pierre-Nicolas,
Your INEL detector gives data very much like a Debye-Scherrer pattern and
is similar to that from the usual synchrotron powder diffractometers. You
will need to reformat the raw data from the data collection system to one
of the GSAS formats. These are described in the manual and there are
several examples in the GSAS distribution kit. The IPARM file should look a
lot like one of the synchrotron ones except that the wavelengths will be
for CuKa and "IRAD" will be "3" and not "0". Your .cal files are not used
by GSAS.
Bob Von Dreele
Pierre-Nicolas Schwab
Orleans, France