Hi Nicolae,
Nice to hear from you!
I couldn't help noting that in reality your emergence in the Rietveld list is
similarly rare as the narrow size distribution :-). Instrumental problems are
far more regular.
Best wishes,
Leonid
*******************************************************
Leonid A. Solovyov
Institute of Chemistry and Chemical Technology
K. Marx av., 42
660049, Krasnoyarsk Russia
Phone: +7 3912 495663
Fax: +7 3912 238658
www.icct.ru/eng/content/persons/Sol_LA
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--- On Tue, 10/21/08, Nicolae Popa <[EMAIL PROTECTED]> wrote:
> From: Nicolae Popa <[EMAIL PROTECTED]>
> Subject: Re: question on size-strain analysis
> To: [EMAIL PROTECTED], rietveld_l@ill.fr
> Date: Tuesday, October 21, 2008, 11:39 AM
> Hi,
>
> Besides strain and instrument also size broadening can be
> close to a
> Gaussian if the crystallite size distribution is very
> narrow. For zero
> dispersion of size distribution the size peak profile is
> about 75% Gaussian
> and 25% Lorentzian (on tails). For details see JAC (2002)
> 35, 338-346 (self
> citation) and other ref. cited there (Langford, Louer,
> Scardi (2000))
>
> Best,
>
> Nicolae Popa
>
