Hi Michael,
It is best to start by guessing the third cumulant only, leaving the fourth
cumulant set to zero. A survey of the published literature shows very few
examples where the fourth cumulant has been fit--by that point the cumulant
expansion itself is starting to become iffy, which is not
Michael,
The values for C3 and C4 should be very small -- they are in Ang^3 and
Ang^4, and should be numerically smaller than sigma2 (in Ang^2). I would
expect values of 0.001 for C3 in a highly disordered system. I'm not sure
anyone has actually seen a value for C4 that was not consistent wit
Hello,
I'm trying to make an EXAFS analysis on the Structure of Tb in a
borogermanate glass System. The reference is an .cif of
Terbium-Gallium-Garnet (TGG).
I expect some disorder caused to working in glass. Therefore I would
like to use the 3rd and/or the 4th parameter. I tried to set a gu
On 06/16/2014 09:20 AM, Stefanie Roese wrote:
Ah okay. I think now I get it. Is it correct that in the mu(E) spectrum
you plot the total spectrum in blue and in red you chose different
fms-radii like 2.5, 3.0, 4.1 to get the XANES spectrum for different
shells?
Yes.
B
Or are the red curves a
Ah okay. I think now I get it. Is it correct that in the mu(E) spectrum
you plot the total spectrum in blue and in red you chose different
fms-radii like 2.5, 3.0, 4.1 to get the XANES spectrum for different
shells? Or are the red curves another varied FEFF parameter?
Thanks so much for your suppo
On 06/16/2014 03:43 AM, Stefanie Roese wrote:
thanks for your answer! My problem is how to get the E/mu information for
each single scattering path.
Sorry, Stefanie. I don't know what that means. Feff computes mu(E) on
a cluster and chi(k) on an individual path. In my talk, I plot mu(E) on
Dear Bruce,
thanks for your answer! My problem is how to get the E/mu information for
each single scattering path. If I get it right, the xmu.dat contains the
sum of all scattering paths. This is the blue curve in your talk. But
there are also the spetra for the first,s econd, third,... path at pag