A full set of high-energy spectroscopy measurements including x-ray ph
otoelectron valence band spectra and soft x-ray emission valence band
spectra of both components of FeSi (Fe K-beta 5, Fe L(alpha), Si K-bet
a 1,K-3) and Si L(2,3) are performed and compared with the results of
ab initio band structure calculations using the linearized muffin-tin
orbital method and the linearized augmented plane wave method.