On 5/10/2011 2:49 PM, Francisco Garcia wrote:
Dear all,
I wish to ask a somewhat novice question: What does the acronym FEFF stand for?
Thank you.
___
Ifeffit mailing list
Ifeffit@millenia.cars.aps.anl.gov
On Tuesday, May 10, 2011 03:03:23 pm Scott Calvin wrote:
My understanding, although I could be wrong is that the effective
part came from an improvement of the theory to account for curved-wave
effects. In other words, early theories approximated the photoelectron
as a plane wave, but of
] What does FEFF stand for?
On Tuesday, May 10, 2011 03:03:23 pm Scott Calvin wrote:
My understanding, although I could be wrong is that the effective
part came from an improvement of the theory to account for curved-wave
effects. In other words, early theories approximated the photoelectron
I think Scott is right that the original meaning of effective was
that the scattering amplitude is not for point scattering of a plane
wave, as was used in earlier work (say, Sayers, et al 1971). Feff3
(circa 1990) didn't to do multiple scattering, but did put in curved
wave effects.
Everyone is at least partially right. In our PR B34,4350(86) paper
(which was rejected by PRL) we noted that the exact single scattering
XAFS eq. could be recast in the same form as that of Sayers Stern
Lytle (PRL 27,1204(71) by replacing the backscattering amplitude
f(pi) with the exact
