Influence of irradiation temperature on self-ion damage in copper
- 1 October 1976
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 34 (4) , 603-614
- https://doi.org/10.1080/14786437608223797
Abstract
The damage structure produced in copper crystals by irradiation with 30 keV self ions in the temperature range 20°-425°C has been studied by means of transmission electron microscopy. The incident ions generate displacement cascades and the vacancy-rich centres of such cascades collapse to form vacancy loops. The number of visible loops remains constant for irradiation temperatures up to 300°C but decreases sharply at higher temperatures. This behaviour can be accounted for by a model in which loop shrinkage is increasingly controlled by loop loss due to thermal vacancy emission-controlled shrinkage. Preliminary results are also presented showing how defect geometry is influenced by irradiation temperature.Keywords
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