Kinetics of Tritium Release from Thermal Neutron-Irradiated Li0.17Pb0.83
Kinetics of Tritium Release from Thermal Neutron-Irradiated Li0.17Pb0.83
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热中子辐照 Li0.17Pb0.83 释放氚的动力学
DOI：
10.13182/fst12-a14112
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发表时间：
2012
影响因子：
0.9
通讯作者：
K. Okuno
中科院分区：
文献类型：
--
作者：
Makoto Kobayashi;Akiko Hamada;Katsushi Matsuoka;Masato Suzuki;Junya Osuo;Y. Edao;S. Fukada;T. Yamanishi;Y. Oya;K. Okuno
摘要研究了热中子辐照Li_（0.17）Pb_（0.83）共晶合金的氚释放行为。在热脱附光谱（TDS）实验中，在略高于熔点的温度下观察到氚的主释放峰。等温退火实验结果表明，Li_（0.17）Pb_（0.83）共晶合金中氚的释放主要是通过扩散过程进行的。氚在液态Li 0.17Pb 0.83共晶合金中的扩散系数为D = 4.7 × 10-8 exp（-0.13eV/kT）m2 s-1。Li 0.17Pb 0.83共晶合金从固态到液态的相变增加了氚的扩散系数，导致TDS谱中出现尖锐的氚释放峰。此外，约4%的氚以Li-T键的形式被捕获在Li 0.17Pb 0.83共晶合金中。
Abstract Tritium release behavior for thermal neutron-irradiated Li0.17Pb0.83 eutectic alloy was studied. Main tritium release peak was observed in the temperature just a little higher than melting point in a thermal desorption spectrometry (TDS) experiment. Most of tritium release from Li0.17Pb0.83 eutectic alloy was found to be governed by diffusion process from the results of isothermal annealing experiments. Tritium diffusivity in a liquid state of Li0.17Pb0.83 eutectic alloy was evaluated to be D = 4.7 × 10-8 exp(-0.13 eV/kT) m2 s-1. Tritium diffusivity was increased by the phase transition of Li0.17Pb0.83 eutectic alloy from a solid state to a liquid state, resulting in the sharp tritium release peak that appeared in TDS spectrum. In addition, about 4% of tritium was trapped in Li0.17Pb0.83 eutectic alloy as Li-T bond.
氢同位素在Li-Pb中的渗透、扩散和溶解实验
影响因子：
3.1
作者：
Yuki Edao;Hidetaka Noguchi;satoshi Fukada
通讯作者：
satoshi Fukada