Dear Alexandra,
The term “standard configuration” is rather indefinite since PANal has a lot of
various configurations and accessories. The most straightforward option for
reducing the low-angle background is the programmable divergence and
anti-scatter slits. For a fixed slit system the low-angle background may be
reduced by primary slits and mask of lower divergence and a proper adjustment
of the beam knife (above the sample) that cuts the air scattering. The
alignment of the sample holder in the primary beam is also important for
low-angle measurements.
Best regards,
Leonid
*******************************************************
Leonid A. Solovyov
Institute of Chemistry and Chemical Technology
660049, K. Marx 42, Krasnoyarsk, Russia
www.icct.ru/eng/content/persons/Sol_LA
sites.google.com/site/solovyovleonid
*******************************************************
--- On Fri, 11/27/09, Alexandra Seclaman <seclaman_alexan...@yahoo.com> wrote:
> From: Alexandra Seclaman <seclaman_alexan...@yahoo.com>
> Subject: Configuration of PANalytical X'pert Pro
> To: "rietveld_l@ill.fr" <rietveld_l@ill.fr>
> Date: Friday, November 27, 2009, 5:09 PM
> Hello,
>
>
>
>
>
>
> I have done a Rietveld refinement using a PANalytical
> X'pert
> Pro but the standard configuration is giving me a lot of
> troubles. This
> configuration is somewhat "blind" to the small 2
> theta angles and it
> introduces (because of the poorly focused X ray beam) a
> heavy
> background. I've manage to remove that background by
> refinement but I'm
> sure that the quality of the acquisition can be
> improved.
>
> I am no engineer, so the inner workings of that machine are
> somewhat a
> mystery to me. I am asking if someone else has used a
> PANalytical for
> Rietveld and if you can give me a better configuration of
> slots, masks
> etc. I have tried different configurations with no
> success.
>
>
>
>
> Please take into consideration, while writing your reply,
> that I'm still a student and I have yet a lot to learn.
>
>
>
>
>
> Thank you!
>
>
>
> Alexandra Seclaman
>
> seclaman_alexan...@yahoo.com
>
> a.c.secla...@gmail.com
>
>
>
