EN
The experimental values of Inelastic Mean Free Path (λ_{IMFP}) of electrons in noble metals (Ag, Au, Cu) are determined in the electron energy range 150-2000 eV. The method used consists of the measurements and theoretical calculations of the coefficient of elastic backscattering of electrons from a solid surface η_{e}. The obtained values of λ_{IMFP} are compared with the data available in the literature.