Quasi-resonant neutralization of He+ ions at a germanium surface
Abstract
When low-energy He ions are scattered from a Ge surface, the fraction of positive ions exhibits characteristic oscillations as a function of ion energy. These oscillations are caused by quasi-resonant neutralization (qRN), a process which can be observed for materials with a narrow band nearly resonant with the unperturbed He-1s level. In the present manuscript, we employ recently developed theoretical methods to extract quantitative information on the efficiency of qRN. Our evaluation reveals that qRN is a highly efficient process leading to ion fractions two orders of magnitude lower than in systems for which neutralization is only due to Auger processes.
Keywords
Cite
@article{arxiv.1307.3153,
title = {Quasi-resonant neutralization of He+ ions at a germanium surface},
author = {D. Goebl and D. Roth and D. Primetzhofer and R. C. Monreal and E. Abad and A. Putz and P. Bauer},
journal= {arXiv preprint arXiv:1307.3153},
year = {2013}
}
Comments
Removed typos. Improved clarity of some passages. Minor changes in section IV, first and last paragraph