Re: rietveld refinement

2004-11-18 Thread Armel Le Bail
It is a separate question to what extent those distributions are "physical"... Simple attempts to establish that at least the size distributions obtained from a mixture of two samples with same composition and two very different size distributions, are close to the expected result, establishing so

Re: rietveld refinement

2004-11-18 Thread Whitfield, Pamela
This is where the real fun starts (if you're a masochist!). I just finished doing some work along those lines this afternoon, and managed to get it to work(ish) eventually. The double-Voigt analysis can give you Dv (volume weighted domain size) and Ds (surface weighted domain size). If you assum

Re: rietveld refinement

2004-11-18 Thread Maxim V. Lobanov
What I remember is that "Breadth" outputs the distributions. What might be the solution is to convert (write a program) Rietveld "peak output" to "Breadth" input. However, I have never done this myself; I converted Xfit-style peak files only, which is pretty straightforward. It is a separate ques

RE: rietveld refinement

2004-11-18 Thread Christopher Chervin
Hi Venkat, If you mean to use rietveld on X-ray data I don't think you can get particle size distributions. X=ray data will give you an average crystallite size but this is not a distribution just an average. Also, it is crystallite size and the actual particles size can be different if the

rietveld refinement

2004-11-18 Thread Mutta Venkata Kamalkar (pBSc)
I am a new user of rietveld softwares. Can anyone suggest me any program or software based on reitveld algorithm and giving the following results... 1) size distribution of particles in a sample. yours sincerely venkat

Job vacancies at ISIS

2004-11-18 Thread Bull, MJ (Martyn)
ISIS is a world leading facility for condensed matter research using neutron scattering and muon spectroscopy, with a strong scientific user programme and extensive international links. ISIS is in a period of major expansion, including the construction of a second Target Station, with an initial

RE: Unexpected honour

2004-11-18 Thread Armel Le Bail
Seriously Thanks guys I did not know about this site till I retired and have wished I knew a lot earlier. Try also the dissident SDPD Mailing List : http://groups.yahoo.com/group/sdpd/ (though Sir Kenneth is also a subscriber...). Armel

Re: Unexpected honour

2004-11-18 Thread Nicolae Popa
Don't worry, it is only funny. And now is funny even more (my opinion) Nicolae Popa > Dear Respected Sir, > Have I done anything wrong! I am really scared, because I am not that much sound in english. > I wrote like that because I respect Prof. Armel very much. > > Please forgive me if there

Re: Unexpected honour

2004-11-18 Thread Alan Hewat
Dear Dr Apu, Don't worry. You have done nothing wrong. It is just a private Anglo-French joke, and it is not (yet) forbidden to make jokes :-) I am sure Armel will be delighted - he has been called worse things :-) Alan. At 10:10 18/11/2004, you wrote: >Please forgive me if there were some thin

Unexpected honour

2004-11-18 Thread apu
Dear Respected Sir, Have I done anything wrong! I am really scared, because I am not that much sound in english. I wrote like that because I respect Prof. Armel very much. Please forgive me if there were some thing wrong or funny. With best regards, Apu /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/

RE: Unexpected honour

2004-11-18 Thread Laurie Aldridge
It was written > Dear Sir Armel >Presumably this long-overdue recognition must be part of the centenary > celebrations of the "Entente Cordiale"? Don't tease him - He deserves it - besides I am learning a lot. >From one who reads and has not commented - Yet Seriously Thanks guys I did not kno

Unexpected honour

2004-11-18 Thread Shankland, K (Kenneth)
Apu wrote.. > Dear Sir Armel Presumably this long-overdue recognition must be part of the centenary celebrations of the "Entente Cordiale"?