What is FEFF 9?
FEFF is an automated program forab initiomultiple scattering calculations of X-ray Absorption Fine Structure (XAFS), X-ray Absorption Near-Edge Structure (XANES) The code yields scattering amplitudes and phases used in many modern XAFS analysis codes, as well as various other properties. FEFF 9: The newest version is FEFF9 (Version 9.6)
What does U+FEFF mean?
A quick Google search told us that our friend U+FEFF was called a ZERO WIDTH NO-BREAK SPACE. Also, a quick trip to Wikipedia told us about the actual uses for U+FEFF, more commonly known as Byte order mark or BOM. Our friend FEFF means different things, but it’s basically a signal for a program on how to read the text.
What is the difference between feff6 and feff7?
FEFF7, fully relativistic multiple scattering XAFS and XANES with polarization dependence. Also has new Dirac-Fock atomic potentials and improved self-energies. FEFF6, multiple scattering XAFS and XANES with polarization dependence.
How easy is feffit to use?
FEFFIT is fairly easy to use. Fitting can be done in k or R space, and error analysis is automatically done, and a wide-range of options are given for modelling XAFS data. Follow this link to the FEFFIT home page.
https://www.youtube.com/watch?v=uE53ck6z5nc