Inelastic energy losses of ions scattered in gas phase and on solid surface

In this work the inelastic energy losses of low energy (0.25-3.0 keV) Ar+ ions scattered on Pd and Ag atoms in gas and solid phases have been investigated experimentally and by computer simulation. It is determined that the inelastic energy losses measured in both cases increase with increasing initial energy E0 and in the case of Pd they are larger than that in solid phase. The inelastic energy losses of Ar+ ions scattered on the surface of Ta, Pt, and Pb polycrystals are also measured. The discrepancy between experimental data and computation results of inelastic energy losses of ions scattered on solid targets is established. It is shown that influence of of neighboring atoms and multiple collisions in the case of solid phase unlike gas phase leads to peculiarities caused by influence of trajectory effects on the value of inelastic energy losses. (author)