Author:
Matsunami N.,Swanson M. L.,Howe L. M.
Abstract
Interactions between irradiation-produced defects and solute atoms in metals have been investigated using the channeling technique. The interaction of interest in this investigation is the trapping of self interstitials by small solute atoms thus creating a [Formula: see text] mixed dumbbell, consisting of a host atom and a solute atom straddling a lattice site in the face-centered-cubic lattice. The displacement of solute atoms from lattice sites in the mixed dumbbell configuration was determined by comparing the experimentally observed normalized yields from solute atoms and from host atoms with the yields calculated analytically using the continuum approximation. The solute atoms in Al–Mn, Al–Cu, and Cu–Be mixed dumbbells were situated at 0.5 Å from the body-centered position, whereas the Ag atoms in Al–Ag dumbbells were 0.7 Å from this position. This result is consistent with the theoretical expectation that the smallest solute atoms are displaced the greatest amount in mixed dumbbells. In addition, experimentally obtained solute atom yields for [Formula: see text] and [Formula: see text] angular scans were compared with calculated scans. It was concluded that for large displacements of solute atoms into the flux peaking region, the analytical (continuum) calculation is a reliable method of determining solute atom displacements, either from the aligned yields or from the angular scans.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy
Cited by
46 articles.
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1. Chapter 9 Hydrogen in Semiconductors: Ion Beam Techniques;Semiconductors and Semimetals;1991
2. Point defect trapping in ion implanted Al(Cu);Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;1990-07
3. Radiation effect study of single-crystal austenitic stainless steel by ion channeling spectroscopy;Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;1990-03
4. Interstitial trapping in ion implanted Al(Ag);Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms;1989-03
5. Lattice location of solute atoms by channeling;Vacuum;1989-01