Band Structure and Inelastic Scattering Effects in the Target Current and Secondary Electron Spectroscopy by Low-Energy Electron Excitation O.F.Panchenko, L.K.Panchenko Institute of Physics & Technology, 72 R.Luxemburg Str., Donetsk 340114, Ukraine Development of theory for two groups of low-energy secondary electron spectroscopy methods. Calculation results of target current and secondary electron emission spectra are compared to the existing experimental data.