Re: Studsvik

East Express ( taoj@ucs.orst.edu )
Fri, 31 Jan 1997 13:54:35 -0800 (PST)

On Fri, 31 Jan 1997, Armel Le Bail wrote:

> What interest for Rietveld users ? RMC is currently being adapted
> for structure determination from powder diffraction data (but this
> software version is apparently not yet available). Also those guys
>
> Armel
>
>

Are we talking about a RMC program for powder XRD data here? That would
be very interesting. There is a list of RMC programs at
http://www.studsvik.uu.se/rmc/rmchome.htm
One of them is RMCPOW, "Structural refinement of crystalline materials
based on powder diffraction data, including modelling of diffuse
scattering". This seems really enticing, but I can't find the program on the
referred ftp server. I am not sure if it is the same program you talked
about.

Does Armel mean for the time being there is no free circulating RMC program
for the powder data, although someone is working on it? I wonder if
there is even a free-to-check-out program using powder data for the
analysis of (really) disordered structure, no matter which approach is
adopted. I would really like to see one.

Some day we will be able to run a powder sample on a super powder diffractometer,
feed the data into a super computer (or just a X86), and after a couple of
minutes, Bingo! Everything will show up on a 20'' ultra high resolution
computer screen, everything you want to know about its structure. I
wounder if people on board of Voyager do that as a daily routine.

Just a little fun for the Friday afternoon. Everybody has a good
weekend!

Tao
1/31/96