Re: GSAS informations

2004-04-13 Thread Armel Le Bail
Presume one of your students makes a fit on a sample having only size anisotropy and he is able to determine the six parameters of the ellipsoid. But after that he has a funny idea to repeat the fit changing (hkl) into equivalents (h'k'l'). He has a chance to obtain once again a good fit, with oth

Re: Fullprof: Le Bail fit for incommensurate structures?

2004-04-13 Thread Maxim V. Lobanov
>I think the best way to do incommensurate structure is Jana. >Peter Dear Peter, Thank you very much. I agree completely, and I used Jana several times - it is really good and convenient. It is simply faster for me to work with Fullprof (matter of experience). I could see also one "disadvantage"

Re: GSAS informations

2004-04-13 Thread Nicolae Popa
Hi, > It seems that we disagree on the meaning of some > english words. English is not my mother language, so I may be > wrong. Nor mine, so I can be equally wrong (or worse). > I was able to put one word on that definition (thanks for it) in my > previous email : distribution (a size distributi

Fullprof: Le Bail fit for incommensurate structures?

2004-04-13 Thread Peter Zavalij
Maxim, I think the best way to do incommensurate structure is Jana. Peter -Original Message- From: Maxim V. Lobanov [mailto:[EMAIL PROTECTED] Sent: Monday, April 12, 2004 4:49 PM To: [EMAIL PROTECTED] Dear collegaues, I would be grateful if somebody could tell me if it is possible to do

Re: GSAS informations

2004-04-13 Thread Jon Wright
Nicolae Popa wrote: the condition to not violate some elementary principles, in particular, here, the invariance to symmetry. Dear Prof Popa, I had been meaning to implement the quartic form for peak width in a refinement program for some time, but did not figure out how to generate the const

Re: GSAS informations

2004-04-13 Thread Armel Le Bail
To a happy Easter, It seems that we disagree on the meaning of some english words. English is not my mother language, so I may be wrong. The naive character doesn't come from the approximation of the crystallite shape by an ellipsoid, but from the approximation of the size effect in powder diffr