EELS—See Electron energy loss

The impact scattering or sudden mechanism has been used to explain the vibrational excitation of chemisorbed molecules in electron energy loss spectra (EELS). See in particular the reference by Tong et al. [25]. 

ELS Electron Energy Loss Spectroscopy Monoenergetic electrons 5-50 eV are scattered off a surface the energy losses are measured. This gives information on the electronic excitations of the surface and adsorbed molecules (see HREELS). Sometimes called EELS. 

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