I also agree that it serves a purpose, even though it is much quieter compared
to when i first joined many years ago. I would not want to see it closed down,
as there are questions coming up from time to time that would be very hard to
get answered anywhere else.
As Kurt suggests – why not just
Is there perhaps a case for extending the scope of the mailing list? I'm sure
many of us are active with non-Rietveld methods of analysing x-ray and neutron
scattering data. Perhaps the list could expand accordingly and become something
like the "X-ray and Neutron Scattering mailing list"?
joo
I seem to remember i asked the same question about Goebel mirrors last year.
The outcome of that, from the list and a private comm or two, was that they are
theoretically challenging to calculate because they effectively act as a series
of monochromators with varying acceptance angles.
The good
I bought Leister Mini a couple of years ago. It is a complete system (excluding
an air supply) for around 2500 CHF purchased here. It doesn't blow a lot of hot
air, but more than enough to heat up a capillary. The TC is not particularly
sophisticated either, and i don't think has the option of e
There is a reality here that the web is really a shifting sands of information.
So the idea we link to images and files we wish to refer to is probably flawed,
and is not going to achieve the "archive" role that would be desirable, simply
because those links will be broken or lost in a few month
Hi all,
I've been asked to do some quantification on some samples which are
predominantly silica, which means a reasonable amorphous component is pretty
much inevitable. I'm thus looking for a suitable internal standard for spiking,
but as this could be quite a big project moving forwards i don
Shay,
Can we assume you are working with a reflection mode instrument?
You have two primary sources of background - the primary beam hitting the
detector directly, and x-rays scattering from the air rather than the sample.
The first of these you control with the divergence slits, but really sho
The prefix "para-" has several definitions, one of which is "abnormal,
incorrect" or "resembling". I assumed this prefix was used because BB geometry
uses the focusing condition but is not truly a focusing geometry: The
diffractometer circle and focusing circle being different causes the focusin
As a point of semantics, how exactly is copyright enforced with respect to the
content of these databases? The crystal structures are in most cases published
elsewhere, so there is no way that ICDD or ICSD can "own" them in any way. And
even if claimed they did, can a crystal structure actually
Hi all,
A quick question - does anyone know an easy way to export the individual fits
for xo_Is type peaks in Topas? I just want a 2 column file for each peak (or a
collated file of all) that i can plot.
I can't find anything in the documentation and my usual info repository (John
Evans' To
I would also suggest that it is easier to just check that your instrument zero
is aligned than to mess around with long scans and fitting routines to separate
correlated variables.
Jools
-Original Message-
From: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] On Behalf O
Actually, i wouldn't recommend that either 😊
My experience with the Ta heaters is that they react with even the smallest
amount of oxygen, and bottled N2 has more than enough to kill a Ta strip. The
best result we had was with a H2/N2 mix, but that still failed (probably
reaction with the sampl
onsumables"
and live with the associated cost. I know this is difficult for a lot of
university labs, but once you adopt that mindset you can do much more
interesting experiments.
Jools
From: Payzant, Andrew
Sent: torsdag 25. juli 2019 17.08
To: Julian Richard Tolchard ; Mibeck, Blaise
Davide,
It seems to me that burning out 3 control boards in a short space of time is
obviously abnormal for any instrument. I would recommend talking directly to
Bruker about it.
jools
From: rietveld_l-requ...@ill.fr On Behalf Of Davide
Levy
Sent: onsdag 23. oktober 2019 10.29
To: rietveld
Thinking a little outside of the crystallographic aspects, do you have element
analysis data? Either XRF or ICP-MS would give a good guide to the sample
composition, and it should match to the composition you are using in the
structure model.
I find it is worth drying both the sample and spike
My personal recommendations from instrument purchasing are:
1. Ask them for a full list of accessories available and a price list. Often
you just don’t realise what useful accessories they sometimes have available.
2. Software licences: Buying a new instrument is a good time to get them
b
That is impressive, but I'm sorry to say that I have seen worse. EM images
though, not diffraction patterns.
From: rietveld_l-requ...@ill.fr On Behalf Of Le
Bail Armel
Sent: fredag 12. januar 2024 12:57
To: Rietveld_L
Subject: Misconduct
Hi,
A good candidate for the "worst Rietveld refinem
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