Probing inelastic interactions of ions moving in solids by electron spectroscopy

Autor:	S. M. Ritzau, Raúl A. Baragiola, R. C. Monreal
Rok vydání:	2000
Předmět:	Physics Nuclear and High Energy Physics Auger effect Electron capture Electron energy loss spectroscopy Electron spectroscopy Secondary electrons symbols.namesake Electron excitation Ionization symbols Atomic physics Nuclear Experiment Valence electron Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :879-885
ISSN:	0168-583X
Popis:	We have measured energy distributions of electrons emitted from clean aluminum surfaces by 20 keV/amu H + , He + and He 0 projectiles. Ratios of energy distributions obtained from two types of projectiles carry information on differences in the electron excitation collisions. We discuss these differences in terms of screening of the projectile by valence electrons, Auger capture and projectile ionization, with the aid of linear response theory. We find the shapes of secondary electron energy spectra are dominated by the energy dependence of the electron escape depth and of the binary ion–electron interaction. The latter must be determined by considering the screened potential of the projectile and its changing charge state as it penetrates the solid.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98ff79d1cb2920262526f29b77a9cd48 https://doi.org/10.1016/s0168-583x(99)01013-7 Zobrazit plný text záznamu Full Text from ScienceDirect