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首页> 外文期刊>Plasma and Fusion Research >Development of a Compact Divertor Plasma Simulator for Plasma-Wall Interaction Studies on Neutron-Irradiated Materials
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Development of a Compact Divertor Plasma Simulator for Plasma-Wall Interaction Studies on Neutron-Irradiated Materials

机译：紧凑型分流器等离子体模拟器的开发，用于中子辐照材料的等离子体-壁相互作用研究

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We have developed a compact divertor plasma simulator (CDPS) that can produce steady-state deuterium and/or helium plasmas with densities above ～ 1018 m?3 for Plasma-Wall Interaction (PWI) studies of neutronirradiated materials. The maximum particle flux is about 1022 m?2s?1. The CDPS was installed and is being operated in the radiation-controlled area of the International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University. We are able to control sample temperature within uncertainty of 5?C during plasma exposure by adjusting the cooling air flow rate to the sample holder. The CDPS has a sample-carrier system, which makes it possible to transfer a plasma-irradiated sample from the sample holder to an infrared heater for analysis using thermal desorption spectroscopy (TDS) without exposing it to the air. This avoids the oxidation of the sample and minimizes the time between the end of plasma exposure and TDS analysis. An ITER-like tungsten (W) sample (A.L.M.T. Corp.), which has been irradiated by neutrons to 0.06 dpa in a fission reactor, was exposed to a deuterium plasma in the CDPS. The experimental results clearly show that the total deuterium retention in the neutron-irradiated W sample increases significantly in comparison with a pristine W, as demonstrated by broadening of the TDS spectrum at high temperatures.
机译：我们已经开发了一种紧凑的偏滤器等离子体模拟器（CDPS），该模拟器可以产生密度大于〜1018 m？3的稳态氘和/或氦等离子体，用于中子辐照材料的等离子体-壁相互作用（PWI）研究。最大颗粒通量约为1022m 2 2s 1。 CDPS已在东北大学材料研究所国际核材料科学研究中心的辐射控制区域内安装并正在运行。通过调节样品架的冷却空气流速，我们能够在等离子体暴露期间将样品温度控制在5°C的不确定度内。 CDPS具有样品载体系统，该系统可将等离子体辐照的样品从样品架转移到红外加热器，以进行热解吸光谱分析（TDS）进行分析，而无需将其暴露于空气中。这样可以避免样品氧化，并最大程度地缩短了血浆暴露与TDS分析之间的时间。在裂变反应堆中被中子辐照到0.06 dpa的ITER类钨（W）样品（A.L.M.T. Corp.）暴露在CDPS中的氘等离子体中。实验结果清楚地表明，与原始W相比，中子辐照的W样品中的总氘保留量显着增加，这在高温下TDS光谱变宽了。

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