Observation of Tritium Distribution in Iron Oxide with Tritium Micro Autoradiography
Observation of Tritium Distribution in Iron Oxide with Tritium Micro Autoradiography
复制标题
用显微氚放射自显影技术观察氧化铁中氚的分布
DOI：
10.13182/fst08-a1871
复制
发表时间：
2008
影响因子：
0.9
通讯作者：
K. Okuno
中科院分区：
文献类型：
--
作者：
K. Isobe;T. Hayashi;H. Nakamura;K. Kobayashi;T. Yamanishi;K. Okuno
摘要 为了阐明氚的渗透行为，利用氚显微放射自显影技术观察了高温水中氧化铁中氚的分布。发现氚均匀分布在铁金属中。然而，氧化物表面（磁铁矿）被发现含有非常低浓度的氚。内层氧化物对氚渗透有强烈影响。与参考文献中报道的渗透实验进行比较。由图1可知，氚主要扩散到氧化物晶格以外的其他路径。根据从铁表面释放到水中的氚的化学形式，提出了两种假设。一种是基于氚在水面界面上的不同组合。另一种是基于氧化机制。
Abstract To clarify the tritium permeation behavior, tritium distribution in iron oxidized in high temperature water was observed with tritium micro autoradiography. It was found that tritium was distributed homogeneously in the iron metal. However the oxide surface (magnetite) was found to contain a very low concentration of tritium. The inner layer of oxide could strongly effect the tritium permeation. From a comparison with the permeation experiment that had been reported in Ref. 1, it was suggested that tritium would mainly diffuse other path except the oxide lattice. According to the chemical form of tritium, which was released from iron surface into water, two assumptions were suggested. One is based on the different combination of tritium on the water-surface interface. The other is based on the oxidation mechanism.