Authors: M. Gonin, R. Kallenbach, and P. Bochsler
Reference: Rev. Sci. Instr. 65 (1994) 648-652.
Charge exchange properties of H atoms passing through thin carbon foils at incident energies from 0.5 to 120 keV/u are discussed in the context of charge transfer models. A model is presented in which the charge state equilibrium in the solid is explained by the overlap of the atomic and the solid-state electron wave functions in k space. Outside the solid, near the surface, charge exchange occurs by tunneling of electrons between the carbon surface and the exiting projectile. Review of Scientific Instruments is copyrighted by The American Institute of Physics.