[Ifeffit] amplitude parameter S02 larger than 1

[Bruce Ravel]

On 03/20/2015 01:44 PM, huyanyun at physics.utoronto.ca wrote:
>
> I agree that P would be 100% correlated with S02 if we assume both sites
> have the same first-shell distance. In my fit, the correlation between
> the percentage parameter P and S02 is -0.73.
>
> Do you have any good idea on how to break this kind of correlation, or
> alternative way to find the 'true S02' and 'true P'?

That would usually require some kind of prior knowledge -- something you 
somehow knew about your sample before beginning the EXAFS analysis.

B

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  National Institute of Standards and Technology
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