Charge Exchange in Low Energy (keV) and Hyperthermal Energy (10-100eV) Ion Scattering.
Abstract
The overall research program described in this report is to investigate the interaction of low (keV) and hyperthermal (10-100 eV) ions with clean and adsorbate-covered metal surfaces; in particular, ion-surface charge exchange processes. We report on the operation of the UHV scattering apparatus for the ion scattering measurements, ongoing development and upgrade of the apparatus, the use of two ion scattering simulations which together cover the entire energy range of interest, the further development of these simulations, and most importantly, the ongoing experiments to determine charge transfer probabilities. The data we present in this report are representative of the scattering spectra we measure. Completed analysis of these and similar spectra will be presented in forthcoming papers. To date, we have measured spectra for Li+, Na+, K+, He+, Ne+, and Ar+ beams, ranging in energy from 50 eV to 4 keV, scattered from the <001> and <1-10> azimuths of Cu(110). Important features of these spectra have been identified with the scattering simulations. Keywords: Hyperthermal ion beams, Resonant charge exchange, Scattering dynamics, Ion scattering instrumentation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 10, 1987
- Accession Number
- ADA187643
Entities
People
- Barbara H. Cooper
Organizations
- Cornell Laboratory of Atomic and Solid State Physics