That’s the best message of the year!
I should remember it.
Luca
> On 16 Jan 2024, at 15:22, Alan W Hewat wrote:
>
> Ha ! When Terry Sabine proposed to call it Rietveld Refinement, I told him
> that Rietveld was already "refined".
>
>
> Dr Alan Hewat,
t;http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-Ray lab)

Maud: http://maud.radiographema.com <http://maud.radiographema/>
> On 13 Jan 2024, at 07:39, A
To be more clear, they did not ask for anything except that such a paper should
never be published!
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-R
not developed it without in reality ;-)
Thanks Reinhard for the explanation of WPF related to Search-match. I can only
see the advertisement/brochure and I didn’t know what exactly they do or mean
with it.
Best regards,
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Inge
from a database (even
the speedy ones) than to re-calculate everything.
So I am glad we both made use of each other models/ideas!
Best regards,
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123
.
Best regards,
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-Ray lab)

Maud: http://maud.radiographema.com <http://maud.radiographema/>
cellphones (I have a prototype running there).
Best regards,
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-Ray lab)

Maud: http://maud.radiographe
st regards,
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-Ray lab)

Maud: http://maud.radiographema.com <http://maud.radiographema/>
>
on the original code.
Luca
<http://www.unitn.it/>
Luca Lutterotti
Dipartimento di Ingegneria Industriale
Università di Trento
via Sommarive, 9 - 38123 Trento (Italy)
tel. +39 0461 2824-14 (Office), -34 (X-Ray lab)

Maud: http://maud.radiographema.com <http://maud.radiographema/>
With 3 atoms, as Larry and Alan explain it cannot be done unless you have
additional info (e.g. chemical info). In our lab, if the three atoms or at
least 2 are in the range for XRF, we do a combined XRD+XRF refinement.
Luca
---Luca
Lutterotti
the wizard works with the option on.
Best regards,
Luca
---Luca
Lutterotti
Dipartimento di Ingegneria Industriale, Universita' di Trento,
via Sommarive, 9, 38123 Trento, Italy
e-mail address : luca.luttero...@unitn.it
Sorry, here is the direct link to the journal article if you have the
subscription:
http://www.sciencedirect.com/science/article/pii/S0026265X15003756
<http://www.sciencedirect.com/science/article/pii/S0026265X15003756>
Luca
---Luca
Lutt
d_X-Ray_diffraction_and_fluorescence_analysis_in_the_cultural_heritage_field>
Best regards,
Luca
---Luca
Lutterotti
Dipartimento di Ingegneria Industriale, Universita' di Trento,
via Sommarive, 9, 38123 Trento, Italy
e-mail address : luca.l
preparation) than to try to
model it.
We actually use preferred orientation (texture) to help structure solution, and
I found more easy to model them than to eliminate them. But may be is just me.
Best regards,
Luca Lutterotti
---Luca
Lutterotti
John is correct, be careful that you are trying to compare same quantities but
in a completely different units and definitions. I discover by myself that you
cannot mix scattering factors, absorption factors, photo absorption etc. coming
some from the diffraction community and some from the
, Krasnoyarsk, Russia
http://sites.google.com/site/solovyovleonid
***
- Original Message -
From: Luca Lutterotti luca.luttero...@ensicaen.fr
To: Leonid Solovyov l_solov...@yahoo.com
Cc:
Sent: Thursday, April 3, 2014 6:33 PM
Subject: Re
Lutterotti luca.luttero...@ing.unitn.it
To: Leonid Solovyov l_solov...@yahoo.com
Cc: Luca Lutterotti luca.luttero...@ensicaen.fr; rietveld_l@ill.fr
rietveld_l@ill.fr
Sent: Friday, April 4, 2014 1:20 PM
Subject: Re: Stacking faults and antiphase boundary
Sorry Leonid,
but here we are talking
Dear Leonid,
On Apr 3, 2014, at 7:16, Leonid Solovyov l_solov...@yahoo.com wrote:
Dear Luca,
I'm glad to see your interest to the problem even after such a delay.
So in the end, your model for faulting as you describe:
A more general model [J Appl Cryst (2000) 338] is included in DDM: was
to
Technology
660049, K. Marx 42, Krasnoyarsk, Russia
http://sites.google.com/site/solovyovleonid
***
From: Luca Lutterotti luca.luttero...@ing.unitn.it
To: rietveld_l@ill.fr rietveld_l@ill.fr
Sent: Wednesday, June 26, 2013 5:19 PM
Subject: Re
the axis normal to the sample surface is not
a valid change in orientation as nothing will change for texture; you
have to change the sample inclination instead (omega or chi).
Best Regards,
Luca Lutterotti
That's the simple test. Let us know what you find.
Another
preparation.
Reinhard
Luca Lutterotti schrieb:
On May 8, 2008, at 12:30 AM, May, Frank wrote:
You can check for texture effects (preferred orientation) by
obtaining multiple patterns of the material. It's realistic to
expect some differences, but preferred orientation is manifest
scale factors)
no density involved.
Best regards,
Luca Lutterotti
On Mar 10, 2007, at 11:52 PM, Mr. Tony Raftery wrote:
Guys,
can anyone send me description (or reference) for the conversion of
weight percent to volume percent for a (solid) mixture - volume
percent is favored
some specifications, files and
what we need to just finalize and optimize it in the shortest time as
possible.
Best regards,
Luca Lutterotti
Best,
Jon
On Thu, 22 Feb 2007, Alan Hewat wrote:
Now this sounds interesting. Certainly the raw data should be
archived
and people
to present the results for the benefit of
comparisons.
Best regards,
Luca Lutterotti
Alan,
if it is trivial to plot in the square root I presume it is already
available in Topas as well GSAS and Fullprof just to mention few. And
if it is so trivial and already available as a button options why no
one is using it. Why every time I look at a paper with a Rietveld
-
thus there is a small risk of something getting hidden. Anyway -
the new
version will be out in a day or two (after I make sure there are no
bugs
introduced by this!)
R.B. Von Dreele
IPNS Division
Argonne National Laboratory
Argonne, IL 60439-4814
-Original Message-
From: Luca
Because you are collecting just in Bragg-Brentano condition, or if
not for every collection you just see only one direction in the
sample, not all together. And if you homogenize all together you will
only observe a broadening of the peaks.
Best regards,
Luca Lutterotti
connections. Otherwise is just a black box that may lead to more errors
than corrections.
Best regards,
Luca Lutterotti
On Apr 1, 2005, at 17:44, P. Bhuv wrote:
Hi,
I would like to discuss a couple of questions raised by a referee;-(
I am not sure if it is ethical
it is possible to get at end some size-strain data, but quite
hard as you have to do all correction later and out of the program. So
it is like using GSAS for peak fitting, so better to use a peak fitting
dedicated program.
Best wishes,
Luca Lutterotti
On Mar 25
/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
- Original Message -
From: Luca Lutterotti [EMAIL PROTECTED]
Date: Friday, March 25, 2005 3:31 pm
Dear Apu,
I know I will start up a good debate here, but size-strain
analysis
with GSAS is a non-sense. The program was not written with that
purpose
Even if the sample has a rolling (orthorhombic) sample symmetry, in a
Bragg-Brentano pure experiment you see it as a cylindrical symmetry as
you cannot distinguish between rotations around the normal to the
sample. If you use a lower symmetry some of the spherical harmonic
coefficients will
I see still today these attachments sold around to
reduce texture effects I cannot avoid to think about it (and laugh).
Luca Lutterotti
On Sep 9, 2004, at 16:30, Omotoso, Oladipo wrote:
Dear Andreas,
This may not be an option for your sample but grinding the sample
On Jul 21, 2004, at 2:02 PM, Alan Hewat wrote:
... Of course, this is just some-one impersonating me
Armel, we know you are ;-))
Luca
Analysis without internal standard (for example for bulk materials) can
be done with Maud for glasses of other common amorphous phases.
http://www.ing.unitn.it/~luttero/maud
there is one example, plus a publication on line.
Luca Lutterotti
On May 6, 2004, at 4:56 PM, Robert Mauricot
Best regards,
Luca Lutterotti
Ps - Even if I am in Italy, I also have paid for the ICSD when it was selling much
less copies but the cost is still the same now.
-------Luca Lutterotti
Dipartimento di
Ingegneria dei Materiali, Univers
peak width but also asymmetry, peak shift and
splitting. See Warren book for more. or try Maud.
Best regards,
Luca Lutterotti
Dear All,
I am trying to carry out Rietveld refinement on a sample that has
very obvious peak shape variation; probably due
.
No general approach available up to now.
Probably you may give some more information about the material and what
kind of strange peak shape you are observing.
Best regards,
Luca Lutterotti
---Luca Lutterotti
. Lutterotti P. Scardi, Adv. in X-ray Anal.
35, 577.
Best regards,
Luca Lutterotti
---Luca Lutterotti
Dipartimento di Ingegneria dei Materiali, Universita' di Trento,
via Mesiano 77, 38050 Trento, Italy
e-mail
about that; may be is that I am an engineer and
not a physicist or chemist.
best regards,
Luca Lutterotti
---Luca Lutterotti
Dipartimento di Ingegneria dei Materiali, Universita' di Trento,
via Mesiano 77, 38050 Trento
. In the residual you can easily
distinguish statistical errors from model errors.
- small peaks are more visibles. Try it on the quartz; you will not need
anymore to zoom the plot on the other peaks.
Just my 0.2 cents,
best regards,
Luca Lutterotti
---Luca
for the very fast help,
Luca Lutterotti
---Luca Lutterotti
Dipartimento di Ingegneria dei Materiali, Universita' di Trento,
via Mesiano 77, 38050 Trento, Italy
e-mail address : [EMAIL PROTECTED]
Home page : http
,
Luca Lutterotti
---Luca Lutterotti
Dipartimento di Ingegneria dei Materiali, Universita' di Trento,
via Mesiano 77, 38050 Trento, Italy
e-mail address : [EMAIL PROTECTED]
Home page : http://www.ing.unitn.it/~luttero
Mirror: http
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