Deuterium permeation through metals under γ-ray irradiation
Deuterium permeation through metals under γ-ray irradiation
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γ 射线照射下氘渗透金属
DOI：
10.1016/j.fusengdes.2018.04.070
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发表时间：
2018
影响因子：
1.7
通讯作者：
Takayuki Terai
中科院分区：
文献类型：
--
作者：
Hikari Fujita;Takumi Chikada;Jumpei Mochizuki;Seira Horikoshi;Moeki Matsunaga;Teruya Tanaka;Takayuki Terai
聚变反应堆中的氚处理对于经济的燃料循环和辐射安全是重要的;然而，关于辐照条件下氚通过结构材料渗透的研究报告数量极其有限。本研究以三种不同氚渗透特性的金属（钯、铂和奥氏体不锈钢）为材料，研究了γ射线辐照对氚渗透的影响。在辐照过程中，四极质谱仪上氘信号的增加包括氘渗透通量的增加和电噪声，并且两者都被分别检测到。所有材料的渗透通量的增加率随着测试温度的升高而降低。证实了增加率的剂量率依赖性。奥氏体不锈钢的氧化不仅表明氘渗透通量的降低，而且表明辐照效应的降低。
Tritium handling in fusion reactors is important for economical fuel cycles and radiological safety; however, the extremely limited number of studies on tritium permeation through structural materials under irradiation conditions has been reported. In this study, γ-ray irradiation effect on tritium permeation has been investigated using three kinds of metals with different permeation properties including palladium, platinum, and austenitic stainless steel. An increase of deuterium signal on the quadrupole mass spectrometer during irradiation consisted of an increase of deuterium permeation flux and an electrical noise, and both were separately detected. The increase rate of permeation flux for all materials became lower as the test temperature increased. Dose rate dependence of the increase rate was confirmed. Oxidation of the austenitic stainless steel indicates a decrease of not only the deuterium permeation flux but also the irradiation effect.