Abstract
Molecular ions and neutral molecules are scattered at 500 eV and at grazing incidence from metal surfaces. H-2(+) and CO2+ are subject to charge exchange processes which lead in part to dissociation. In the case of CO2 evidence for negative molecular ion formation is found. Potassium ''poisons'' the dissociation of H-2 on Pd. These findings are supported by comparison of different metals, Pd(111) and Pd(111) covered with a monolayer of K. The dissociation probability of H-2(+) and H-2(0) decreases at the K-covered surface, in the case of CO2+ and CO20 an increase is found. CO2+ on Pd(111) + K dissociates completely.
| Original language | English |
|---|---|
| Pages (from-to) | 352-355 |
| Number of pages | 4 |
| Journal | Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms |
| Volume | 100 |
| Issue number | 2-3 |
| Publication status | Published - Jun-1995 |
| Event | 10th International Workshop on Inelastic Ion-Surface Collisions (IISC-10) - GRAND TARGHEE RESORT, United Kingdom Duration: 8-Aug-1994 → 12-Aug-1994 |
Keywords
- PD(100) SURFACE
- ADSORPTION
- SCATTERING
- AG(111)
- HYDROGEN
- PT(111)
- OXYGEN
- ALKALI
- IONS
- CHEMISORPTION