Hi Mehmet, The documentation in feff9 for MPSE is (obviously) not very good. What you will need, to start, is a calculation of the bulk loss function L(E) = -Im[1/epsilon(E)] for your material. I can discuss the details with you over email if you like. Cheers, Josh Kas joshua.j.kas@gmail.com

Dear all,

i want to run FEFF with the many pole self energy MPSE. In the documentation to FEFF9 is written that I have to use the formula detailed in 'EpsInvFormula.ps' to calculate the optical constants.

Where can I get this file?

Many thanks

Mehmet from University Duisburg-Essen in Germany