As announced, I will describe my method a few weeks later. At now,
all documents are in german.
In principle, gracing incidence should be possible. *Not* possible
is a primary monochromator, until now. But I must redesign the
program GEOMET, which computes the profile shape for a given
diapragm system. Until now, there was no request for this. At now,
there are possible
- reflection specimen, bragg-brentano-focussing
- transmission specimen,
- capillary.
But there is a great problem with texture compensation for
gracing incidence. The program has an up-to-date texture
compensation with spherical harmonics of even order up to 8.
This means up to 45 parameters in triclinic. Of course, lower
orders are possible. But this model supposes constant orientation
of the bisector between primary and secondary ray ("scattering
vector"?) in the specimens coordinates. This is not fulfilled
for gracing incidence, if 2 Theta changes. I think, mostly
one researches thin layers with gracing incidence. And, mostly,
they are of strong texture.
Theoretically, there is a solution for the problem by a complicated
rotation of the specimen fulfilling the condition above.
Yes, there are some publications for the peak shape model.
But they are in german. They are published after 1986 in
-"Wissenschaftliche Zeitschrift der TU Dresden"
and
-"Freiberger Forschungshefte",
two local scientific journals from east-germany until 1989.
They describe the program EFLECH, the older fitting/deconvolution
program. And, until 1992, I was estimating the ideal profil
shape with an experiment. This is not a practical usable way,
I have learned in several years. Now I compute this ideal shape,
as described above.
At the time of this publications, there were no PC's in east-germany
and therefore no electronic publishing. Therefore, I have no
electronic sources for an e-mail. But I can send you a copy of
the articles with normal post, if you want.
Sincerely Your's
J"org Bergmann
bergmann@rcs1.urz.tu-dresden.de