I would like to pass on word that there are fellowships available for younger
scientists based at US institutions (recipients need not be a US citizen) for
the IUCr Congress in Montreal this August. Awardees must present their work –
either as a poster or talk – at the Congress, and will be
Due to the wonders of web page management, our web content on powder
diffraction, which includes quite a few on-line lectures, has moved to a new
location:
https://www1.aps.anl.gov/Education/Powder-Diffraction-Educational-Materials.
This URL is hard to find at present, so this is worthwhile to
Have you looked at this:
https://subversion.xray.aps.anl.gov/pyGSAS/Tutorials/BkgFit/FitBkgTut.htm, but
why is your zero-background plate giving you peaks? It should be off-cut so
that there is no Bragg diffraction.
Brian
On Feb 2, 2018, at 10:09 AM, Muir, Caelin Frederick
Dear Henk,
I am not sure if this is what was intended in your commentary and e-mail,
but I read from it the point that have heard often over the years, which is
that someone is less than fully deserving of scientific credit because “s/he
only developed the software” and in particular the
Tony,
These days many if not most powder instruments (~100% of those at
synchrotron and neutron sources) do some sort of data processing to take raw
measurements and convert them to diffractograms that are used in Rietveld. The
key for how to know if this is done properly is to ask if any
Alex,
We do not have a routine that will merge peaks from multiple histograms, but
you can use “Save peaks” on each histogram to obtain the files for each. Them
manually edit them to create a composite file which can be read in and then
used for indexing.
Brian
On Apr 13, 2020, at 1:24 PM,
https://subversion.xray.aps.anl.gov/CMPR/trunk/src/ito15/
On Aug 8, 2021, at 6:58 AM, Peter Stephens
wrote:
Does anybody know where I can find the source code of the powder indexing
software ITO?
All the best,
Peter
**
Peter W. Stephens
SUNY Distinguished Professor
Sure.
This can be done in GSAS-II from the GUI (see
https://subversion.xray.aps.anl.gov/pyGSAS/Tutorials/Simulation/SimTutorial.htm,
just export a HKL file rather than a simulated pattern) or from a Python
script (see
Hi everyone,
This December we will celebrate Bob Von Dreele’s 80th birthday with a set of
talks and remembrances. This will be held at NIST in Gaithersburg, MD (USA) on
Monday, December 4. We welcome talks on Bob’s contributions to science and data
analysis, talks on work done cooperatively
My personal feelings are that regardless of the origin of the idea, Hugo did
the work that made crystallographic full pattern fitting possible. That
implementation was not just a “programming task” as the minimal capabilities of
computers of the day required significant innovation for memory
I am going to make the comment that (A) neutral atom form factors are probably
closer to the actual electron distribution in most materials where there is
significant covalent bonding (~= almost everything) and (B) even if that were
not true, the difference between O, O1- and O2- is probably
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