Abstract
The radiation damage characteristics of some of the phases of SYNROC, notably rutile and the perovskites, barium titanate and calcium titanate have been investigated. The effects of electron irradiation on a number of simple oxides, such Al2O3 , ZnO and MgO are well documented. The effects are generally more complicated than those in metals, as there are two or more charged species usually of significantly differing masses. Electron irradiated oxides generally form pure edge interstitial loops and undergo a decrease in displacement energy (Ed ) with increasing temperature. The latter effect has been ascribed to the occurrence of two separate displacements, one for the anion and one for the cation, corresponding to the minimum and maximum in the temperature versus displacement voltage curves. Optical measurements have been used to distinguish anion from cation displacements.Irradiation of rutile in the temperature range 200°C to 400°C with lMeV electrons caused the production of pure edge interstitial unfaulted dislocation loops of the type b=a<100> lying on {100}s planes (FIG. 1.).
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