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Technology No. 40638

FEFF is an automated program for ab initio multiple scattering calculations of X-ray Absorption Fine Structure (XAFS), X-ray Absorption Near-Edge Structure (XANES) and various other spectra for clusters of atoms. The code yields scattering amplitudes and phases used in many modern XAFS analysis codes, as well as various other properties.

For more information: https://feff.phys.washington.edu/feffproject-feff.html

Available Licenses:

Academic License: FEFF Software License – Academic and Non-Profit

Commercial License: FEFF Software License – Commercial and For-profit

See right panel to license FEFF.


  • swap_vertical_circlelibrary_booksReferences (3)
    1. J.J. Rehr, J.J. Kas, F.D. Vila, M.P. Prange, K. Jorissen (2010), Parameter-free calculations of x-ray spectra with FEFF9, Phys. Chem. Chem. Phys., 12, 5503-5513
    2. J.J. Rehr, J.J. Kas, M.P. Prange, A.P. Sorini, Y. Takimoto, F.D. Vila (2009), Ab initio theory and calculations of X-ray spectra, Comptes Rendus Physique, 10, 548-559
    3. J. J. Rehr and R. C. Albers (2000), Theoretical Approaches to X-ray Absorption Fine Structure, Rev. Mod. Phys., 72, 621
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FEFF Software License – Academic and Non-Profit

Term: 30 years

unit Price
1 $500.00
2 $750.00
3 $1,000.00
4 $1,250.00
5 $1,500.00

FEFF Software License – Commercial Use

Term: 30 years

unit Price
1 $5,000.00
2 $7,500.00
3 $10,000.00
4 $12,500.00
5 $15,000.00

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