Medium energy secondary electron spectroscopy methods in the crystal surface diagnostics

The fine structure (FS) of the experimental secondary electron emission spectra (SEES) along the normal to Ir(1 1 1) surface and the target (total) current spectra (TCS) of Cu(1 1 1) surface are interpreted theoretically. It is shown that the FS of SEES and TCS is mainly due to the electronic structure of finite states to which the electrons come or from which they emit. The predominant role of the effects of bulk energy-band structure in the formation of spectra is shown.