Tritium release from neutron-irradiated Li2O:: Transport in porous sintered pellets

被引：2
作者：
Tanifuji, T [1 ]
Yamaki, D [1 ]
Jitsukawa, S [1 ]
机构：
[1] Japan Atom Energy Res Inst, Tokai, Ibaraki 31911, Japan
来源：
FUSION ENGINEERING AND DESIGN | 2006年 / 81卷 / 1-7期
关键词：
tritium; Li2O; square-root law; micro-pore diffusion;
D O I：
10.1016/j.fusengdes.2005.10.011
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The tritium release behavior from Li2O sintered pellets (81-88% T.D.) is examined by isothermal heating tests. (1) For the 88% T.D. specimens, the fraction of residual tritium is found to follow the square-root law of the annealing time. The rate-determining process is the migration in the connected micro-pore. (2) For the 81% T.D. specimens, which are annealed after irradiation at 630K for 4h, the fraction of residual tritium is also found to follow the square-root law of the annealing time. The rate-determining process is the migration in the connected micro-pore. (3) For the 81% T.D. specimens as irradiated, the tritium release rate is found to follow the square-root law of the annealing time. The rate-determining process is controlled by Kohlrauch stretched exponential form. Tritium trapped in irradiation defects released with recovering the defects by isothermal heating. (c) 2005 Elsevier B.V. All rights reserved.
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页码：595 / 600
页数：6
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