Martin,
The reason of your bad experience with March-Dollase can be different,
however, Leonid was right. The March-Dollase is normalized, the
Rietveld-Toraya not. It can be easily normalized (see for example J.
Appl. Cryst. 28(1995)247-253) but in all Rietveld codes I know it is not.
Best
radovan
Martin a écrit :
Sorry to disagree. Experience tells me otherwise - the March-Dollase
correction has nearly always led to poor quant results for me. It most
certainly cannot be applied safely.
Martin
------------------------------------------
M Vickers
Dept of Chemistry
UCL
------------------------------------------------------------------------
> Subject: Re: Quantitative analysis
> Date: Tue, 28 Oct 2008 02:53:20 -0700
> From: [EMAIL PROTECTED]
> To: Rietveld_l@ill.fr
>
> Dear Mario,
>
> One more possible problem of applying preferred orientation
corrections in QPA is that not all of them are normalized. For example,
the March-Dollase correction is normalized and can be applied safely,
but the Rietveld-Toraya correction is inapplicable to QPA as it does not
preserve the scale normalization.
>
> Best regards,
> 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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