Electron spectroscopic studies of the neutralization of slow multicharged ions during interactions with a metal surface
Abstract
Recent experimental results of electron spectroscopic studies of the neutralization and relaxation of slow multicharged ions interacting with metal surfaces are summarized. Discussed are measurements of projectile K-Auger electron emission during interactions of N(sup 6+) ions with clean and cesiated Au, as well as clean Cu single crystal targets. While the dominant component in the measured K-Auger spectra is shown to be due to sub-surface electron emission, at incident perpendicular velocities below about 10(exp -2) au, small features become evident in the measured K-Auger spectra that are consistent with above surface projectile electron emission. Experimental results are compared with results of modelling studies of above- and sub-surface electron emission. Also presented are measurements of low energy electron emission during multicharged ion-surface interactions, together with a discussion and analysis of the various contributing low energy emission mechanisms.
- Publication:
-
Presented at the 18th International Conference on the Physics of Electronic and Atomic Collisions
- Pub Date:
- 1993
- Bibcode:
- 1993peac.conf...21M
- Keywords:
-
- Electron Emission;
- Electron Energy;
- Energy Spectra;
- Ion Beams;
- Nitrogen Ions;
- Particle Interactions;
- Spectrum Analysis;
- Beam Neutralization;
- Copper;
- Gold;
- Metal Surfaces;
- Single Crystals;
- Atomic and Molecular Physics