In 1993, while demonstrating my results on a conference,
a scientist asked me: "Would You like to develop a Rietveld-
program using Your expansive peak model? I thought about,
and I did. The first, very incomplete program was running
in january 1994. I have complete redesigned the
code and the language of the input files. The program
is written in ANSI-C. The redesign was helpful for easy
implementation of many new features. Until now, there are
included many new and up-to-date features.
On of the best features, of course, is the expansive
profile model. With it's aim, we have reached R-values deep
below 10% even for large divergencies causing strong asymmetric
peaks. For example, we have reached <10% for an organic
transmission-specimen (thickness 1mm, horizontal divergence
slit also 1mm), which caused strong box-shaped->triangle-shaped
profiles.
The program is used in Prague, Freiberg, Dresden and Berlin
until now.
I'm going to hear some around in this mailing list, to get
a feeling about topics of discussion. Then, I will give
further information for my program.
Sincerely Your's
J"org Bergmann
bergmann@rcs1.urz.tu-dresden.de