Abstract
We provide an experimental method for extracting above-surface components of K-Auger emission in interactions of highly charged second row ions with an Al(1 1 1) and a Si(1 0 0) surface. Comparing spectra of helium-like metastable and hydrogen-like projectiles at minimized incident projectile velocities, we simultaneously discover the previously identified KLV W peak and a low-energy foothill to the KLL structure. By detecting secondary electrons at an angle of grazing observation, the KLL spectra reveal further unique features. We systematically analyze the experimental data for different ion species and target materials. On this basis, we develop a consistent interaction model describing above- and near-surface K-Auger emission.
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Schedule a callMore From: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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