Ion fractions of Ne+ and Ar+ in the scattered flux and of H+, O+, and Mg+ in the directly recoiled flux have been determined during Ne+, Ar+, and Ar2+ bombardment of clean, oxidized and hydroxylated magnesium surfaces. The VUV photons emitted during bombardment of clean Mg have been analyzed. The extraordinarly large ion fractions of Ne+ and O+, the sensitivity of the ion fractions to adsorbates, and the emitted photons are analyzed in terms of an ion-surface charge-exchange mechanism. The direct recoil measurements are capable of detecting the chemisorbed oxygen-oxide phase transformation on the magnesium surface.
|Number of pages||7|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|State||Published - 2 Apr 1986|
ASJC Scopus subject areas
- Nuclear and High Energy Physics