Thank you very much Bruce, that help me a lot. I finally fixed it by
using a slightly modulated part of the source code of Athena.
At this point I just want to report a little bug I found using the
linear combination function of Athena. Since I didn't use the plot
window I didn't realized it befor
Hi Todd,
One thing to try is to set s02 to a positive value and all the other
variables to reasonable values and then look at the real or imaginary
parts of the Fourier transform and also look at the chi(k) spectra. You
should "see" the affect that Scott mentioned.
Shelly
> -Original Messa
Hi Todd,
Your paragraph below is correct; i.e. you do not have a physically
realistic model. One common cause of a negative S02 is that the model
also is off by half an oscillation. After all, the negative S02 turns
the signal upside down, shifting it by half an oscillation can then
cause a r
Hi Craig,
I'm cc'ing this to the Ifeffit mailing list, as others may encounter
similar problems.
It's not your novice-ness that's causing the problem; it's a version
issue. I wrote the ZnO example when an older version of the software
was current. Since then, "dr" became a reserved variable,
A totally unrelated joke: If anyone ever watched "Da Ali G" show on HBO,
there was an episode, when Ali G interviews a famous economics professor.
The first question was: "Professor, what is a PIN code?"
A.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
I am very new to XAFS analysis, I am wondering if there is a physical
meaning to a negative value for SO2. Based on the XAFS equation I can't
understand what the physical significance of a negative SO2 value would be,
therefore I am assuming that my modeling results using Athena are not
representa