Features of energy distributions of secondary electron emission induced by H+ ions from metals

Energy distributions of electrons induced by 1...2,25 MeV H+ ions have been experimentally studied for 0...100 eV energy interval. The targets were foils of silver, titanium and bulk specimen made from stainless steel. The distributions are approximated with high accuracy by power-law functions with two energy intervals and flex point near 20...35 eV. The dependences of power indexes and average energy of electrons in the distributions on specific ionization loss of ions have been found. Influence of atom ionization by plasmons and possible formation of 'universal' distribution function of high energy electrons (power index of function has no dependence on structure and power of source and sink) are the reasons for these dependences.