Hi Chris,
There is nothing sacred about Rbkg=1.0 Ang. It was chosen as a
reasonable default. If you know you have atoms much closer than 2Ang,
lowering Rbkg to half the first neighbor distance is a fine place to
start. You may have to play with this value (and the k-weight used in
the
Hello everyone,
In removing background, most literature suggests Rbkg value of 1.0 because
below this represents mostly noise and low freq components not part of the
scattering effect. In using Feff and viewing the individual paths
calculated a number of them have paths near 1.5 A, therefore
Chris,
If you look at Shelly Kelly's tutorial on xafs.org, she suggests Rbkg be
about half the R value for the first peak. This setting worked well in my
case with vanadyl-silicates where my first feature was around 1.6 A. Her
tutorial also discusses setting Rbkg and what to look for when doing
Hi Chris,
One thing to keep in mind is that it is not wrong to eliminate part of
your signal; it just means you're losing a little bit of data. This is
similar to a common filtering mistake that beginners make when trying
to choose the maximum end of their fitting range: they look at the
