Electron momentum spectroscopy of metals

Abstract

Electron momentum spectroscopy measurements of aluminum, copper and gold are presented. Data were taken for incoming electrons with an energy of 50 keV, and both outgoing electrons with an energy near 25 keV. In all cases we used an identical deconvolution procedure, which consistently removes all intensity at high energy loss values. However the intensity becomes vanishing small only for binding energies of about twice the bandwidth. The observed spectra compare well with many body calculations based on the cumulant expansion scheme

EMS Measurement of the Valence Spectral Function of Silicon – A Test of Many‐body Theory

“…Inelastic multiple scattering events can be deconvoluted from the data by measuring an energy loss spectrum for 25 keV electrons passing through the sample. This deconvolution is done without using any free parameters [25]. This approach is used in the present case.…”