Dear Rietveld Users,
I would like to find a standard in transmission geometry in order to
test the resolution of our futur laboratory diffractometer.
I would like to find a simple coumpound with a relative low absorption
from 10 to 20 cm-1 with copper radiation.
I have asked the same quest
Dear Rietveld users,
I am looking for a distributor of Toshiba X-ray tube for a Miniflex
(Rigaku) system in France or in Europe
The model is A20, 21 or 41
Thanks in advance
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Pr. Francois GOUTENOIR
Dear Rietveld users,
I am currently using Bond_str from the fullprof suite to calculate the
valence of my different atoms. I would like to calculate the bond
valence in the case of mixed sites with different oxidation state. Does
anyone have found a solution to do this calculation of the mixed
currently working with two compounds which present high
preferential orientation K2SO4 and
NaHCO3 on different diffractometer setting and sample preparation:
reflection/transmission, back loading preparation, spread on grease,
capillary …..
If any one can help me ? Thank in advance.
François
Dear Rietveld users,
We are currently using transmission flat sample on our diffractometer.
To prepare the transmission flat sample we are using mylar 15microns or
kapton. We put the sample between 2 mylar foils.
I would like to know if there is some tricks in order to nicely put the
powder
Thank every one for the propositions.
Find here after the result of a test (vaseline + n-heptane)
http://perso.univ-lemans.fr/~fgouten/Transmission_Tricks
Best Regards, François
Le 08/02/2017 13:35, François Goutenoire a écrit :
Dear Rietveld users,
We are currently using transmission flat
Dear Rietveld users,
We would like to buy or to built an heater system for our laboratory
system (Empyrean equipped in transmission with capillary). The aim is to
reach 200-300°C, this is mainly for organic compounds. I have few
questions : if we use an air blower is there any problem for the
://perso.univ-lemans.fr/~fgouten/Asymmetry
Best Whishes, François Goutenoire
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Pr. Francois GOUTENOIRE
e-mail:francois.gouteno...@univ-lemans.fr
Tel: 02.43.83.33.54
FAX: 02.43.83.35.06
Département des Oxydes et
Why is that?
Best
Jon
On December 8, 2017 3:35:20 PM GMT+01:00, "François
Goutenoire" mailto:francois.gouteno...@univ-lemans.fr>> wrote:
Dear Rietveld users,
We observe an unusual asymmetric peak shape on pellet and
Dear Rietveld users,
I am starting with Topas5.0 commercial, and I would like to do a mixed
X-Ray-Neutron refinement directly on GUI mode.
Does anyone can send me an example of *.PRO file or even an *.INP file
to to the refinement in launch mode.
The neutron data are with constant wavelengt
, François Goutenoire
--
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Pr. Francois GOUTENOIRE
e-mail: francois.gouteno...@univ-lemans.fr
Tel: 02.43.83.33.54
FAX: 02.43.83.35.06
Skype Entreprise visio conférence
Département des Oxydes et Fluorures
Institut
Dear Rietveld users,
One more question ! I am unable to find the way to constraint occupancy
factor for mixed sites in Topas in GUI mode.
Sorry for this basic question, but I did not find any examples in
Archives Mailing List / Topas Wiki / or even in the Topas examples
Best whishes, Franço
Thanks to every one.
It was not so difficult in fact .
Best whishes, François
Le 19/02/2019 à 11:02, François Goutenoire a écrit :
Dear Rietveld users,
One more question ! I am unable to find the way to constraint
occupancy factor for mixed sites in Topas in GUI mode.
Sorry for this basic
Dear Rietveld users,
One more question !
Does any one has performed a mixed (TOF+RX) refinement with Fullprof ?
I would like to have an *.pcr file for model.
Best Whishes, Francois
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Pr. Francois GO
://perso.univ-lemans.fr/~fgouten/Topas
If some one have used such restraint ?
Best whishes François Goutenoire
--
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Pr. Francois GOUTENOIRE
e-mail: francois.gouteno...@univ-lemans.fr
Tel: 02.43.83.33.54
FAX
743 29.045
{r1=Sumj(sij)-Vi, %dev=100abs(r1)/Vi}
Deviation from the Equal Valence Rule (r2): 0.332
{r2=>rms}
I need now to see the penalties !! need also some help !
Best whishes, François
Le 07/03/2019 à 16:03, François Goutenoire a écrit :
Dear Rietveld users, especially Topas users,
I
Hello everyone,
Far away from the pure Rietveld question...
We have a beautiful XRK900 (furnace) system associated with our latest
powder diffractometer.
However, the temperature chamber associated with Z-Stage is relatively
heavy (15-20Kg ?)
and the tie is on the back panel and the arm st
Dear Rietveld Users
I would like to use IRF file in Jana in order to do Size-Strain analysis.
But in the Tools/Powder/Export IRF File is not active ?
Thanks in advance, François
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Pr. Francois GOUTE
Dear Rietveld users,
I have some industrial compound presenting a strong hyper-Lorentzian peak shape
(eta=1.1 with HighScore). When we calculate the amorphous content after an
internal standard addition, the result is 40%. The micro-absorption effect has
been minimized (mu of the internal stan
Dear Rietveld users,
Thank you very much for all your responses, it will help us move forward
on the subject.
Unfortunately, I cannot say more because of an NDA.
But it still looks very interesting from a fundamental point of view.
Best whishes, françois Goutenoire
Le 03/03/2021 à 18:47
know if some one
have done such test, what can we obtained in term of increase of the
resolution, lost in counting, decrease of asymmetry at low angle
.
François
Dr. François Goutenoire
Maître de Conférences
Assistant Professor
Laboratoire des Oxydes et des Fluorures
Av. Olivier
Dear Rietveld users,
A small Excel sheet + some explanations in french (sorry !)
I hope that I am giving the good answer
https://perso.univ-lemans.fr/~fgouten/Irradiation_Area
Best wishes, Francois
Le 15/10/2024 à 13:04, Nelson Duarte a écrit :
Dear Colleagues,
I`m trying to access a Virtua
Hi every one,
A very interesting discussion, thank Armel, I am working with many
Rietveld programs :
Jana2006, up to my knowledge there are only diffusion factor for neutral
atom
HighScorePlus, it should be the same
Topas, many diffusion factors could be found (ex: Al or Al3+) but B3+ is
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