Neutralization of keV-energy alkali-metal ions colliding at gold surfaces
| Autor: | Yunqing Xiao, Pinyang Liu, Vladimir A. Esaulov, Yuanqing Shi, Ximeng Chen, Yanling Guo, Lin Chen, Yachao Zhu, Lei Gao |
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| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Range (particle radiation) Materials science Scattering 02 engineering and technology Escape velocity 021001 nanoscience & nanotechnology Alkali metal 01 natural sciences Ion Azimuth 0103 physical sciences Perpendicular Work function Atomic physics 010306 general physics 0210 nano-technology Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 450:73-76 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2018.11.022 |
| Popis: | Li+ and Na+ ions are scattered from Au(1 1 0) and Au(1 1 1) surfaces in the keV-energy range, respectively. The pronounced Li° and Na° fractions non-monotonically vary with incident energy and exit angle for high work function gold surfaces. In particular, the azimuthal angle dependence of Li° fraction has been observed at low incident energies for a grazing exit angle. The simple calculations are presented to compare with the experimental data. Our findings clearly indicate that both the perpendicular and parallel exit velocity affect the final neutral fraction. |
| Databáze: | OpenAIRE |
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