  Electron distributions produced by grazing impact of fast protons on
Mg(0001), Cu(111), Ag(111) and Au(111) surfaces are investigated, focusing on
the effects of the electronic band structure. The process is described within
the Band-Structure-Based approximation, which is a perturbative method that
includes an accurate representation of the electron-surface interaction,
incorporating information of the electronic band structure of the solid. For
all the studied surfaces, the presence of partially occupied surface electronic
states produces noticeable structures in double differential - energy- and
angle- resolved - electron emission probabilities from the valence band. These
structures remain visible in electron emission spectra after adding
contributions coming from core electrons, which might make it possible their
experimental detection.
