||Download it Here
of the FEFF project
||FEFF is an automated program for the calculation of phase shifts
scattering amplitudes of polarization dpendent single and multiple scattering
X-ray Absorption Fine Structure (XAFS) and X-ray absorption Near-Edge Structure
(XANES) spectra for clusters of atoms. The most recent version of FEFF is
numbered 8. The programs available from The FEFF Project are:
- FEFF 8: FEFF 8 improves over previous versions of FEFF by including
self consistent calculation of potentials to provide charge transfer and
a more accurate estimate of the Fermi level. It also includes full multiple
scattering calculations to improve XANES calculations, where multiple
scattering expansions can fail to converge. FEFF 8 can output the angular
momentum projected density of states.
- FEFF 7: This code offers improved input/output with an optional binary
file structure for the feffnnnn.dat files, new Dirac-Fock atom densities
and improved scattering potentials and self-energies, improved XANES
capabilities including a fully relativistic cross-section that includes
both l --> l-1 and l --> l+1 transitions, polarization dependance
and many other features.
- Earlier versions of FEFF and the FEFF Tables are also available.
- Atoms: Generates input files, feff.inp, for crystalline materials
which are suitable for FEFF5 and higher.
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