Auger electron emission from solid surfaces under heavy-ion bombardment

$L_{23}\mathrm{VV}$ and $\mathrm{KLL}$ Auger spectra produced by 2-keV electrons, 3-MeV protons, and 0.8-2-MeV/amu ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, ${}_{}{}^{32}{}_{}{}^{}\mathrm{S}$, and ${}_{}{}^{35}{}_{}{}^{}\mathrm{Cl}$ ions using solid targets of Al and Si were measured. No satellite lines of the $L_{23}\mathrm{VV}$ transition were observed, a result which can be explained by relaxation phenomena as an effect of the solid state. Additional structure at the high-energy side of the $L_{23}\mathrm{VV}$ peak can be ascribed to multiple $L$-shell vacancies in the initial state. The intensities of these hypersatellites are discussed within the statistical model of multiple ionization.