Blanket materials for fusion reactors: Comparisons of thermochemical performance
Abstract
Thermodynamic calculations were made to predict the thermochemical performance of the fusion reactor breeder materials, Li2O, LiAlO2, and Li4SiO4 in the temperature range 900 to 1200 K and in the oxygen activity range 10(-25) to 10(-5). Except for a portion of these ranges, the performance of LiAlO2 is predicted to be better than that of Li2O and Li4SiO4. The protium purge technique for enhancing tritium release is explored for the Li2O system; it appears advantageous at higher temperatures but should be used cautiously at lower temperatures. Oxygen activity is an important variable in these systems and must be considered in executing and interpreting measurements on rates of tritium release, the form of released tritium, diffusion of tritiated species and their identities, retention of tritium in the condensed phase, and solubility of hydrogen isotope gases.
- Publication:
-
Presented at the Conf. on Thermodyn
- Pub Date:
- 1984
- Bibcode:
- 1984thdy.conf.....J
- Keywords:
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- Blankets (Fusion Reactors);
- Breeder Reactors;
- Reactor Materials;
- Thermochemistry;
- Tritium;
- Light Water;
- Lithium Oxides;
- Oxygen;
- Silicon Oxides;
- Temperature Dependence;
- Plasma Physics