Re: Debye 1915 paper

2013-12-26 Thread Alan Hewat
__ Dr Alan Hewat, NeutronOptics, Grenoble FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __ On 26 Dec 2013 23:34, "Enyuan Hu" wrote: > Dear all, > > I've been looking for English trans

Searching PDF files that cannot normally be searched.

2013-12-20 Thread Alan Hewat
her operating systems :-) Just a little end-of-year diversion from the usual Rietveld exchanges :-) Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 htt

Re: X-ray diffraction laboratory manager position

2013-12-06 Thread Alan Hewat
rformed experiments and scientists analysed and published the results. This attitude still colours relations at large scale user facilities. Alan ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.Neut

The PANalytical Award

2013-09-05 Thread Alan Hewat
, a trophy and a certificate. The award is presented yearly at an event that is still to be confirmed. http://www.panalytical.com/en/Events-overview/The-PANalytical-Award.htm __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http

Re: Unrestrained SDPD future

2013-08-09 Thread Alan Hewat
t figures from a heavy atom compound with one axis as long as 17.5 Angstroms - by x-ray powder diffraction ! "The future isn't what it used to be" (Paul Valery, French poet) Alan ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE

Re: [sdpd] Re: Are restraints as good as observations ?

2013-08-08 Thread Alan Hewat
rst step before rigid body > > OK, I asked people to stop this argument. The essential points have > been covered, so I am restraining the two principal antagonists from > posting for a 1 week relaxation period :-) Please email me personally > if you don't agree. __

Re: Help with parts for of an old Philips 1055/81 goniometer ?

2013-08-02 Thread Alan Hewat
up on your suggestions that I forwarded to him. Alan On 1 August 2013 01:08, Alan Hewat wrote: > A colleague asks if anyone can help him with the rotating sample > compartment of an old Philips 1055/81 goniometer ? He badly needs this > part since the company (Panalytical) say they

Restraints on posting to the Rietveld list

2013-08-02 Thread Alan Hewat
g for a 1 week relaxation period :-) Please email me personally if you don't agree. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOp

Re: [sdpd] Re: Are restraints as good as observations ?

2013-08-01 Thread Alan Hewat
they say that the more restraints the better, some of us don't agree. Let's leave it at that. Alan __ Dr Alan Hewat, NeutronOptics

Help with parts for of an old Philips 1055/81 goniometer ?

2013-07-31 Thread Alan Hewat
A colleague asks if anyone can help him with the rotating sample compartment of an old Philips 1055/81 goniometer ? He badly needs this part since the company (Panalytical) say they no longer support this very old system. __ Dr Alan Hewat, NeutronOptics

Archive of Rietveld messages

2013-07-30 Thread Alan Hewat
/www.mail-archive.com/faq.html#delete ). Thanks to Stephane Armanet at ILL, we think we have solved this problem, and this message and all future messages to the Rietveld_L list should appear on http://www.mail-archive.com/rietveld_l@ill.fr/maillist.html Alan __

Re: *.cif files for RMnO3 (R= Sm,Eu,Gd,Dy,Ho,Yb)

2010-03-13 Thread Alan Hewat
* >> Dr. Holger Putz >> Crystal Impact >> Dr. K. Brandenburg & Dr. H. Putz GbR >> Rathausgasse 30 >> 53111 Bonn >> Germany >> >> Tel . : +49-228-9813643 >> Fax : +49-228-9813644 >> E-mail: p...@crystalimpact.com >> Web : http://www.crystalimpact.com >> *** __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

RE: Negative Uiso in GSAS

2010-03-04 Thread Alan Hewat
her effects and correct for them, not simply refine them away. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

RE: Powder diffraction and Fuji image plate

2010-02-25 Thread Alan Hewat
Alan __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Find-it

2010-02-10 Thread Alan Hewat
lass of compounds, it can be really frustrating to > have just the WWW version instead of FINDIT. > > However, this is just a personal opinion based on experience from > several years ago. Maybe the boundary conditions have changed since > then... > > Best wishes, > Fran

Re: Find-it

2010-02-10 Thread Alan Hewat
uhe.de/ You can get a demo account and you can trade in your FINDIT license for a WWW ICSD license, which will always be up to date and run on any computer. Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68

Re: Negative Biso / absorption in TOPAS.

2010-02-10 Thread Alan Hewat
same effect on intensities as a negative contribution to the overall B factor, and indeed you can calculate the magnitude of the effect if you know the absorption coefficient. Again, use physical information rather than simply refining more parameters. ____

RE: What is a good sequence for refinement of (U,V, W) of a multiphase sample ?

2010-02-04 Thread Alan Hewat
unction of angle. You can remove this correlation by simply fixing the angle for this minimum i.e. by differentiation and requiring that V=-2U.tan(theta) where 2.theta is approximately the monochromator angle for a conventional neutron diffractometer. ___

Re: Location of Hugo Rietveld ?

2010-01-28 Thread Alan Hewat
to send a greeting to the list. Alan. Alan Hewat said: > It has been a while since I last heard from Hugo Rietveld. Does someone > have his current email or phone number please (perhaps send it to me > privately rather than to the list, since he does not give it on his home >

Location of Hugo Rietveld ?

2010-01-28 Thread Alan Hewat
longer work :-( Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: request of an example of 14mm or 14/mmm structure

2010-01-26 Thread Alan Hewat
heometry, A being a metallic atom and > O oxygen) that crystallizes in the 14mm or 14/mmm space groups? > > thanks a lot > > angel luis ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Request of Atomic coordinates of CuAlO2

2009-11-17 Thread Alan Hewat
of you send me the CIF or the coordinate of CuAlO2? > > It has the following lattice parameters: a=2.85, c =16.94 alpha = beta > = 90, gamma = 120, V = 119.7. Space group R-3m Hexagonal (Rhomhedral, > No 166). > > many thanks in advance. > > stephen ____

Re: .cif file for SnO

2009-07-18 Thread Alan Hewat
000 more cif files, all for free with a convenient search engine. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

New ICSD Web version - News from FIZ Karlsruhe

2009-07-03 Thread Alan Hewat
...@fiz-karlsruhe.de With best regards, Wendelin Detemple Head FIZ Products & Services Marketing & Sales __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Source and comparison of X-ray scintillator screens

2009-06-12 Thread Alan Hewat
for crystallography, especially with CCD detectors ? 2) Sources of "not too expensive but efficient" X-ray fluorescent screens of at least 120x160mm? Thanks to anyone who can comment. Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANC

ICSD update 2009/1 to 120794 structures

2009-04-09 Thread Alan Hewat
users. Alan __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: introduce myself - structures in the Bi-Mn system

2009-04-01 Thread Alan Hewat
posited films and its crystal structure (1986) Acta Metallurgica 34, 969-979 ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: journal

2009-04-01 Thread Alan Hewat
tml __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

The World-Wide Rietveld list ?

2009-03-24 Thread Alan Hewat
1 * .hu 2 * .ru 9 * .su 1 * .gov 51 * .mx 10 * .by 1 * .my 1 * .uy 1 * .cz 6 __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Cagliotti and Other Issues

2009-03-23 Thread Alan Hewat
ucture, rather than trying to get the lowest possible R-factor by refining more parameters. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: K6H2Nb6O19.8H2O

2009-03-20 Thread Alan Hewat
ahedra (Nb6O19) held together with water hydrogen bonds and K+ or other cations for charge balance. Alan __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: K6H2Nb6O19.8H2O

2009-03-20 Thread Alan Hewat
metal oxides. Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

RE: UVW - how to avoid negative widths?

2009-03-20 Thread Alan Hewat
ne broadening, usually allowing more parameters to be refined to produce lower R-factors :-) Alan ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: UVW - how to avoid negative widths?

2009-03-19 Thread Alan Hewat
ou can do if the refinement programme only allows the Cagliotti formula. Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Error messages when posting to the Rietveld list

2009-03-09 Thread Alan Hewat
______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: How to determine the crystalline system

2009-03-09 Thread Alan Hewat
enough trouble even learning French :-) Alan. Jon Wright said: > Alan Hewat wrote: > >> ... your name appears as ½¨²¨Áº > > The problem is your mail reader, thunderbird displays some chinese > characters. Liang's mail correctly uses a MIME encoded word as the ascii >

Re: How to determine the crystalline system

2009-03-09 Thread Alan Hewat
ally, the angles. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: cif file request

2009-02-27 Thread Alan Hewat
Sr0.4 Cu24+y O41+z Ohta,T.;Izumi,F.;Onoda,M.;Isobe,M.;Takayama-Muromachi,E.;Hewat,A.W. Journal of the Physical Society of Japan (1997) 66, 3107-3114 Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOpti

Re: cif file request

2009-02-27 Thread Alan Hewat
ons, offers? > I'd be greatful... > BRGDS, > > J. Androulakis ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE +33.476.98.41.68 http://www.NeutronOptics.com/hewat __ _____

Re: crystal strcuture of ZrB2, ZrC, and MoSi2

2008-12-07 Thread Alan Hewat
Service http://cds.dl.ac.uk/ While at ILL Grenoble he will also have access to ICSD on http://icsd.ill.fr/ Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Structure of YbAlO3 _ Pbnm

2008-12-04 Thread Alan Hewat
ariations of Cr-doped (Y,REE)AlO3 perovskites. > Zeitschrift fur Kristallographie, 220 (11), 930-937 > > not in ICSD (don't ask me why...) ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Structure of YbAlO3 _ Pbnm

2008-12-03 Thread Alan Hewat
Let me re-phrase what I just said (it's too early in the morning for me :-) These are classic tilted perovskite structures due to the large size of the RE atom. YbAlO3 (Pbnm) might be expected to have the same structure as EuAlO3 (Pbnm). Try typing YbAlO3 into Google. Alan Hewat said: &g

Re: Structure of YbAlO3 _ Pbnm

2008-12-03 Thread Alan Hewat
nal Solid State Chem. 177, 1276-1284 Alan. > I need a structure file of the YbAlO3 _ Pbnm. Could someone indicate me a > good reference? > > In my adjust I used a EuAlO3 _ Pbnm from ICSD as substitute but I do not > know if is correct. ________

Re: cif File of Nb2O5

2008-11-12 Thread Alan Hewat
ified Nb2O5 at high pressure which is monoclinic. I want its unmodified > form of Structure. Please send me any reference title or source where from > I can get it. Thanking you in advance. > > Sincerely yours > > D.S. Bhange ______ D

ICSD update v2008-2 contains 117,058 structures

2008-11-06 Thread Alan Hewat
e/ or http://icsd.ill.fr/ ICSD user licenses can be purchased from <[EMAIL PROTECTED]> using the order form on http://www.fiz-karlsruhe.de/icsd_price_list.html Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.4

Re: cif files for austenite

2008-11-01 Thread Alan Hewat
I worry that people rely so much on databases and computer programmes, and so little on thinking. Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: cif files for austenite

2008-11-01 Thread Alan Hewat
locate the carbon. Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: ICNX-2009 International Conference on Neutron and X-Ray Scattering

2008-08-11 Thread Alan Hewat
-2009-V2.pdf For further information and pre-registration please contact <[EMAIL PROTECTED]> or <[EMAIL PROTECTED]> ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.Neutr

Re: PDF analysis

2008-07-28 Thread Alan Hewat
If the question is asked on this list, please answer it on this list. Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Crystal STructure Godovikovite or Sabieite

2008-07-10 Thread Alan Hewat
lan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Different atomic coordinates

2008-06-21 Thread Alan Hewat
, as is the calculation of bond-lengths and angles. Alan ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

ICNX-2009 International Conference on Neutron and X-Ray Scattering

2008-06-15 Thread Alan Hewat
-registration please contact: [EMAIL PROTECTED] __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: PDF refinement pros and cons

2008-06-13 Thread Alan Hewat
C. The original question I think, was whether there is any computational advantage in Fourier transforming the data before refining. Probably not. Alan. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

RE: PDF refinement pros and cons

2008-06-13 Thread Alan Hewat
y become a matter of personal choice. For my part, given a choice, I would prefer to use the original data (with short wavelengths, combined neutron/xray data, resonance scattering or whatever else is available and not specific to PDF). Alan. __

Why was my message rejected ?

2008-06-12 Thread Alan Hewat
e list, and archiving them as well on the internet, if they simply "reply" to an earlier email from that person without checking the "to" field. And please remember not to post large attachments to all 1000+ Rietveld list members. Alan. _

RE: Sequence for varying parameters in FullProf

2008-05-27 Thread Alan Hewat
ntal patterns. The examination of the difference pattern is a quick and efficient method to detect blunders in the model or in the input file controlling the refinement process." ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]>

RE: Preferred orientation?

2008-05-18 Thread Alan Hewat
ly difficult with small samples and particular sample geometries. Preferred orientation can also be associated with granularity (necessarily poor powder average). Interesting to see which topics generate the most heat, if not light (which are similarly related :-) Alan. _____

Anisotropic temperature ellipsoid display with ICSD-Jmol

2008-05-14 Thread Alan Hewat
iew". __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Article

2008-05-07 Thread Alan Hewat
bscription at: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PODIE218010701&idtype=cvips&gifs=yes ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Home page location

2008-04-13 Thread Alan Hewat
me.htm I am not sure what further assistance you might require, but to obtain help on using the ILL listserver, which includes the Rietveld list, simply send a message to <[EMAIL PROTECTED]> with the subject HELP :-) Alan Hewat (Rietveld list maintainer). PS to reply to the whole list , use &

Re: WARNING: Posting large attachments on the Rietveld list

2008-03-17 Thread Alan Hewat
_ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE < [EMAIL PROTECTED]> +33.476.98.41.68     http://www.NeutronOptics.com/ __

Re: WARNING: Posting large attachments on the Rietveld list

2008-03-17 Thread Alan Hewat
ent such mistakes, and also prevent automatic "out of office" replies going to the whole list. We have also limited the size of Rietveld list messages to 0.5 Kbytes, which should stop large attachments. Please tell me if this is a problem. Alan.

WARNING: Posting large attachments on the Rietveld list

2008-03-17 Thread Alan Hewat
e. Rant concluded. Alan Hewat (Rietveld list maintainer) __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

Re: Montmorillonite cif

2008-03-15 Thread Alan Hewat
t to model, so the profile fit will be relatively poor. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/hewat __

ICSD database updated to 103,679 structures

2008-03-10 Thread Alan Hewat
The ICSD database on http://icsdweb.fiz-karlsruhe.de/ has been updated to 103,679 structures (for registered users). __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: Neutron or X-ray?

2008-03-09 Thread Alan Hewat
, it was not the question - "Neutron or X-ray" (for this particular metal oxide). ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: Neutron or X-ray?

2008-03-09 Thread Alan Hewat
gt; XRPD result. > > At the moment I did not found a justification of this and I do not know > which result is the ‘right one’. > > Do you have any suggestion? > > Thank you > > Davide __ Dr Alan Hewat, NeutronOptics, Gre

RE: advice on new powder diffractometer

2008-02-19 Thread Alan Hewat
> I never thought of background as "noise"... See http://dictionary.reference.com/browse/signal-to-noise%20ratio :-) __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

RE: advice on new powder diffractometer

2008-02-19 Thread Alan Hewat
fit for unknown reasons, adding too much "a priori" information such as constraints, or throwing in extra garbage parameters to improve the R-factors. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: advice on new powder diffractometer

2008-02-18 Thread Alan Hewat
(due to a high background and a low resolution pattern) the calculated standard deviations in parameters can still be large, which gives me confidence in Rietveld refinement :-) Alan. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMA

RE: advice on new powder diffractometer

2008-02-18 Thread Alan Hewat
d of 700 counts. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: D2(3) Strukturbericht designation for NaZn13

2008-01-28 Thread Alan Hewat
RB/v31/i7/p4622_1 for an example. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: Graphic superposition of crystal structures

2008-01-17 Thread Alan Hewat
between them with Jmol. ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: Molecular Radii

2008-01-08 Thread Alan Hewat
gram can > be used to determine the molecular radii of a crystalline material. With > Thanks Johjn __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: LAMP installation

2007-12-15 Thread Alan Hewat
ne please tell me which of the Lamp runtime tar.gz files I > am to download? ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

How to obtain help from the Rietveld list server

2007-12-11 Thread Alan Hewat
To obtain help, send an email with the title HELP to [EMAIL PROTECTED], not to Rietveld_L@ill.fr :-) Alan (Rietveld list manager) __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Workshop on Powder Diffraction with 2-Dimensional Detectors

2007-11-22 Thread Alan Hewat
f travel expenses for invited speakers, and for students and postdocs. If participation demand is too great, a selection of participants might be made. __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.6

Re: FullProf

2007-11-21 Thread Alan Hewat
ging its WWW site. The old one is still available on http://wwwold.ill.fr/dif/Soft/fp/ which is linked from http://www.ill.fr/dif/Soft/fp/ Yes it is confusing, for me too :-) ______ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]>

Re: FullProf

2007-11-21 Thread Alan Hewat
tml __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: CIF/STR file of hydrobiotite (annite/biotite + vermiculite)

2007-10-02 Thread Alan Hewat
ay explain why it has not already been done :-) Leandro Bravo said: > I´ve searched in several databases(including ICSD) and did not find a cif > file of hydrobiotite. Could somebody, please, tell me if a cif file of > this phase exist?! _____

ICSD database exceeds 100,000 structures for the first time

2007-09-16 Thread Alan Hewat
). __ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.476.98.41.68 http://www.NeutronOptics.com/ __

Re: Crystal structure of Ti2S

2007-08-22 Thread Alan Hewat
(33R) and the unit cells of 45R and 57R types of titanium sulphide" http://dx.doi.org/10.1016/0022-5088(87)90576-5 And references therein. Early X-ray work may not have got the stoichiometry right. _____ Dr Alan Hewat, ILL Grenoble, FRANCE

Re: Crystal structure data for BSA products

2007-08-07 Thread Alan Hewat
stal data >> (*.CIF) of the following phase: BaAl2Si2O8 orthorrombic. >> I have already checked in the most commun links and I found the >> BaAl2Si2O8 monocmonic but that's not enough _____ Dr Alan Hewat, ILL Grenobl

Re: Request of atomic coordinate of Berzelianite Cu2Se

2007-07-18 Thread Alan Hewat
88) Solid State Ionics 28, 1332-1337 _____ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Parameters in Rietveld refinement

2007-06-27 Thread Alan Hewat
_ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _ Alan I wanted to send the following to the Rietveld

Inexpensive CCD neutron alignment camera

2007-06-22 Thread Alan Hewat
://icsd.ill.fr/neutron/ BTW this camera should also work with X-rays :-) _ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

RE: Cif data

2007-05-29 Thread Alan Hewat
ne else has already done. >And make the request to a friend or the list only after exhausting the free >resources. Hmm... Alan. _____ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72

Re: Cif data

2007-05-29 Thread Alan Hewat
ed :-) Alan. _____ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Re: Cif data

2007-05-28 Thread Alan Hewat
1) BiFeO3 R3c 2) BiMnO3 C2 Sosnowska, I.; Schaefer, W.; Kockelmann, W.; Andersen, K.H.; Troyanchuk, I.O. Crystal structure and spiral magnetic ordering of Bi Fe O3 doped with manganese (2002) Appl. Phys. A 74, S1040-S1042 _ Dr Alan

Re: Hydroxiapatite, carboapatite and fluorapatite - Request of

2007-05-23 Thread Alan Hewat
iences 6, 987-994 But you had better have some very good neutron data if you also have fluorine substituting for water as well as carbonate for phosphate :-) _____ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.4

Re: Hydroxiapatite, carboapatite and fluorapatite - Request of

2007-05-23 Thread Alan Hewat
f any of you have very good quality STR files of hydroxyapatite, fluorapatite >and carboapatite, or only one file of hydroxycarbofluorapatite?! _____ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Workshop " Watching the Action II: Non Ambient X-Ray Powder

2007-04-11 Thread Alan Hewat
8 306 2989 _____ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Re: BaTiO3 crystallography

2007-04-09 Thread Alan Hewat
nd how difficult it really was until much later, you can do no better than to read some of these early papers. Alan. _____ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Re: Nature policy update regarding source code]

2007-03-24 Thread Alan Hewat
by a benevolent newspaper http://www.nature.com/nature/debates/e-access/ _ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Re: Problems using TOPAS R (Rietveld refinement)

2007-03-13 Thread Alan Hewat
ion of Complex Samples R. Kleeberg (2005) Microstructure Analysis in Materials Science http://www.ww.tu-freiberg.de/mk/bht/Abstracts/kleeberg.pdf _____ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.4

Re: Problems using TOPAS R (Rietveld refinement)

2007-03-13 Thread Alan Hewat
n kaolinite (1989) Clays and Clay Minerals 37, 289-296 Young, R.A.;Hewat, A.W. Verification of the Triclinic Crystal Structure of Kaolinite (1988) Clays and Clay Minerals 36, 225-232 _____ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTE

ICSD version 2007-1 updated to 97376 structures

2007-03-13 Thread Alan Hewat
. _ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet)  http://www.ill.fr/dif/people/hewat/ _

RE: Re: Embedded plots, was Re: Powder Diffraction In Q-Space

2007-03-07 Thread Alan Hewat
CSD uses pgplot and exports PDF and postscript but a Java plotter back-end has some advantages). Alan. _ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.i

Calculation of powder peaks from CIF files?

2007-03-05 Thread Alan Hewat
possible but nothing fancy :-) Alan. _ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _

Re: Negative Biso from neutron data

2007-03-02 Thread Alan Hewat
ore about the geometry of your TOF diffractometer, but most such machines now collect data over a range of angles for reasons of efficiency, just like conventional diffractometers :-) Alan _ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PR

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