[Ifeffit] data after rebinning look worse in k-space than before?

Luca Loreggian l.loreggian at gmail.com
Wed Jul 4 01:04:37 CDT 2018


Hi Ilya,
I apologize in advance if this sounds stupid.. could you please explain me
why it is obvious that your data needs to be rebinned?
thank you
Luca

2018-06-27 12:09 GMT+02:00 Ilya Sinev <ilya.sinev at ruhr-uni-bochum.de>:

> Hi all,
>
>
>
> I have a question regarding the chi(k) function isolation and rebinning
> processes. I have some data recorded in “quasi channel-cut” modus, i.e.
> with the mono constantly moving and the data points collected with the
> highest possible rate. With 180 sec measurement in yields to a spectrum of
> ca. 8600 point, which obviously needs to be rebinned. The rebinned data,
> however, does not look good in k-space even if multiple data are merged.
> Moreover, I have an impression that the raw spectrum in k-space does not
> have those 8000+ points anymore but significantly less. Is there any
> reduction of the data points number that is not seen (e.g. as a preparation
> step for FT)? Since the unbinned data has higher quality, does it then make
> more sense to keep using it for EXAFS analysis?
>
>
>
>
>
>
>
> Thank you
>
> Ilya Sinev
>
>
>
> --
>
> Herr Dr. Ilya Sinev
>
>
>
> Institute for Experimental Physics IV
>
> Faculty of Physics and Astronomy
>
> Ruhr-Universität Bochum
>
> Universitätsstrasse 150
>
> 44801 Bochum, Germany
>
>
>
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>
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>
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>
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>
>
>
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