Plasmon Losses in Core Photoemission Spectra
A short review is presented on theoretical approach to plasmon losses in core-level photoemission from simple metals. Full multiple elastic scatterings of photoelectrons are taken into account before and after the plasmon losses within the quantum cumulant (Landau) formula that can describe both intrinsic and extrinsic losses, and overall features of core level photoemission. Far from normal emission and in low energy excitation, we cannot apply these simple exponential formulas.
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