Energy spectra of Al-LVV auger electrons induced by grazing angle incident fast heavy ion impact

Abstract

Angular-resolved energy spectra of Al-LVV Auger electrons induced by impacts of N 6+, Ar 46+, Ar 12+, and Xe 9+ with incident energies corresponding to 0.84–1.3 MeV/amu have been measured for two incident angles of 39° and 4° relative to the surface of the target. The energy of the Auger peak is found to be low for the 4° incidence compared with that for the 39° incidence. Such energy decrease becomes more significant as the atomic number of the projectiles increases. An emission angle dependence of the energy decrease is not observed. The mechanism for the energy decrease is tentatively discussed in terms of a surface effect.