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Date: Tue, 09 Nov 1999 07:26:32 +0100
To: RIETVELD_L Distribution List <[EMAIL PROTECTED]>
From: Armel Le Bail <[EMAIL PROTECTED]>
Subject: Re: Advice on a new diffrac
Hi everyone,
There is a diffractometer here for rapid data collection (Siemens D5000,
7.5 degree position-sensitive detector, no monochromator and can't be
retrofitted for one).
My question is, what would be a good choice for a second diffractometer in
this situation (ie what brand, what kind of
Robin Shirley ([EMAIL PROTECTED]) writes:
> However, I have to say that I'd feel happier about supporting CIF as a common
> file format if (a) it were considerably simpler to read and (b) the CIF
> committee were more responsive to practical powder-related issues.
I do owe Robin an apology for my
Lachlan:
>Is there GEM related information on available software (or portability
>tools) that are being developed in parallel with the hardware so that GEM
>can produce "usable" and "analyzable" data?
Yes, we have a major software effort to handle these data and reduce them
down to manageable s
[EMAIL PROTECTED] Wrote:
At 13:47 08/11/99 -, you wrote:
>dear all,
>If you wonder why powder diffractionists should be concerned with large data
>files, please note that the new ISIS high-flux powder diffractometer GEM, of
>which I am responsible, produces about 64 Mbytes of integers (14 Mby
(keeping the entire text of Robin's Email as it was not
Cc'd to the Rietveld list).
Robin Shirley ([EMAIL PROTECTED]) writes:
> Lachlan Cranswick writes [Fri, 5 Nov 1999 17:59:40 + (GMT)]:
>
> > While the database system Armel has done looks good,,
> > this still leaves the problem of a co
[EMAIL PROTECTED] wrote:
> I would just like to draw your
> attention to the NeXus project, which has the (ambitious) purpose of
> developing a unified data format for x-rays and neutrons.
> http://www.neutron.anl.gov/NEXUS/
> http://lns00.psi.ch/NeXus/
The NeXus format is an excellent way to dea
Andrew S. Wills wrote :
>Armel, how would you feel about accepting magnetic data? -are you accepting
>all waifs and strays (sdf's in French)? :-) Or perhaps Alan, you would prefer
>to house them at the ILL.
I think that sounding opinions about doing or not a database, and
asking to researchers i
Kurt (& others),
The real problem with small samples in Bragg- Brentano geometry is assuring
that the sample covers uniformly the entire "foot print" of the incident
x-ray beam at all scattering angles used in the scan, i.e. there are no
"bare spots". If this is not achieved then the observed diff
Roger Mason wrote:
> Does anyone know if it is possible to use the same *.EXP file on dos &
> UNIX (Linux) machines?
>
> If so, what changes must be made to the file?
The file contents are exactly the same for the .EXP as well as the data
and instrument parameter files, but in DOS the records mu
Roger (& others),
The transfer of GSAS files from unix (linux) to PC is straightforward, but
one does have to do certain things to get it right. The problem is that
these files (exp, data & iparm) are all in fixed record length (80
character) direct access format. On unix machines this has the app
Lubomir Smrcok wrote:
> It would be nice if you make public the subroutines you have
> mentioned in your mail.
Sorry, no intent to be obscure, just brief. See
http://www.iucr.org/iucr-top/cif/index.html (in the Americas,
http://www.us.iucr.org/iucr-top/cif/index.html) and look for CIFtbx2
(and C
dear all,
since standard data formats were mentioned, I would just like to draw your
attention to the NeXus project, which has the (ambitious) purpose of
developing a unified data format for x-rays and neutrons.
http://www.neutron.anl.gov/NEXUS/
http://lns00.psi.ch/NeXus/
The NeXus format is ba
Hi Roger,
I don't think that there will be problems with the EXP file, but there could
be with the data file as the end of line statements may not be there in the
UNIX version and all the data may be on one line. If this is the case you will
simply need to convert it to an 80 column per line for
Dear All,
I think that standardisation is an important topic at the moment- the dawn of
a database of diffraction patterns. If you take a look through the different
formats that GSAS and FULLPROF can accept (I name those only for convenience)
it is a bit of a jungle- I include of course both 2-ax
hello,
Does anyone know if it is possible to use the same *.EXP file on dos &
UNIX (Linux) machines?
If so, what changes must be made to the file?
Thanks in advance,
Roger Mason
Kurt wrote:
>Can I dump the extracted structure factors from GSAS
>into ESPOIR, for example? It would be nice if this was really happening...
I am not a GSAS user, but as the ESPOIR programmer, I would say
that nothing is more easy than to dump structure factors into it.
The format is free, a
At 22:14 07/11/99 -0200, Helio Salim de Amorim wrote:
>I think that PowBase is yet a remarkable step and your public domain
>character a very important aspect. I think also, that is not necessary a
>hard standardization but a few directions like,
>- the data must be an ASCII file.
>- unpublishe
At 11:15 08/11/1999 +0100, [EMAIL PROTECTED] wrote:
>The latest mails archived at :
>http://www.mail-archive.com/rietveld_l@ill.fr/
>are dated by January 1999... Is this already an effect
>of Y2K ?
Hmm. As you see from the header, the mails that I receive from our Rietveld
server are correctly da
Hi !
The latest mails archived at :
http://www.mail-archive.com/rietveld_l@ill.fr/
are dated by January 1999... Is this already an effect
of Y2K ?
Armel Le Bail
http://www.cristal.org/
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