The experimental vałues of Inelastic Mean Free Path (λΙΜFΡ) 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 calcułations of the coefficient of elastic backscattering of electrons from a solid surface ne . The obtained values of λΙMFP are compared with the data available in the literature.

The angular distributions of secondary electrons (incłuding Auger electrons) of different energies emitted from polycrystalline silver bombarded with primary electrons (E ρ = 1000 and 2500 eV) were measured with a RFA analyzer equipped with an additional collector (acceptance angle 4°). Additionally, the angular distributions of primary ełectrons of different energies elastically backscattered from the same sample were also investigated by means of a specially constructed rotabłe RFA analyzer equipped with a channeltron. Tłe results obtained show the cosine distribution of secondary and Auger electrons emitted as shown previously in the literature. The angular distributions of electrons backscattered elastically depend on ełectron energy and are in good agreement with theoretical calculations (Monte Carlo simulation of primary electrons trajectories in solids) proposed by Jabłoński.

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