Mathematical Models for Predicting Tritium Transport in Lithium Ceramics

摘要

Tritium retention and release data for lithium ceramics (Li sub 2 O, LiAlO sub 2 , and Li sub 4 SiO sub 4 ) are available from in-reactor and post-irradiation anneal tests on single crystals, powders, and sintered products. With the exception of the single-crystal tests in which bulk diffusion is the rate-limiting release mechanism, it is very difficult to interpret the results of these tests and extrapolate the results to design conditions for a fusion solid-breeder blanket. Mathematical models are presented for various bulk, grain-boundary, and free-surface phenomena to aid in the interpretation and extrapolation of the data. 24 refs., 6 figs., 4 tabs. (ERA citation 13:010501)