In fusion devices, liquid lithium is increasingly employed as a plasma-facing material owing to high heat loads and neutron irradiation, as well as the necessity for impurity control in the plasma. Notably, addressing the retention of hydrogen and its isotopes deuterium and tritium is crucial for effective utilization of liquid lithium. To measure and control the hydrogen and deuterium content in liquid lithium, specialized permeation sensors and permeation extraction devices are essential. Consequently, there is a need for research on the permeation and diffusion of hydrogen in liquid lithium and permeable membranes. This paper introduces a model encompassing hydrogen adsorption, diffusion, and permeation in niobium membranes and liquid lithium. Experimental measurements of hydrogen adsorption in liquid lithium and hydrogen permeation in niobium membranes are presented. The scenarios are simulated using hydrogen transport module developed on COMSOL platform, resulting in a relatively good agreement with the experimental data.

中文翻译：

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研究氢通过与液态锂接触的铌膜的渗透

在聚变装置中，由于高热负荷和中子辐射以及等离子体中杂质控制的必要性，液态锂越来越多地用作面向等离子体的材料。值得注意的是，解决氢及其同位素氘和氚的保留问题对于液态锂的有效利用至关重要。为了测量和控制液态锂中的氢和氘含量，专用的渗透传感器和渗透提取装置是必不可少的。因此，需要对氢在液态锂和渗透膜中的渗透和扩散进行研究。本文介绍了一个包含铌膜和液态锂中氢吸附、扩散和渗透的模型。提出了液态锂中氢吸附和铌膜中氢渗透的实验测量。利用COMSOL平台开发的氢传输模块对场景进行了模拟，与实验数据吻合较好。