Theory of the Electron Energy-Loss Spectrum in Core-Level X-Ray Photoemission from Solids

Abstract

I present a theory of the electron energy-loss spectra observed in x-ray photoemission from the core levels of solids and report on calculations for the $2s$ and $2p$ core levels of Al, Mg, and Na. The calculation takes intrinsic as well as extrinsic plasmons into account, and in all cases the agreement between theory and experiment is very good.