How do you get those absorption backgrounds, free of EXAFS? I can see it for Kr, but how did you do it for the other, chemically-reactive elements? mam
In short:
we've chosen at least two compounds of each element with especially
simple
EXAFS signal (mostly glasses), modeled this signal and eliminated it
from the
original
data. This residual is used as an approximate atomic absorption
background for the
other sample, whose spectrum, after subtraction of this
background, is the basis for
an improved EXAFS model. Afterwards, the role of
the two spectra is switched.
After a few steps the published estimates were
obtained.
The
procedure is described in the article:
Padeznik Gomilsek, J.,
Kodre, A., Arcon,
Some
information can be found on Iztok Arcon's website: http://www.p-ng.si/~arcon/xas/
Best
regards,