Applicability of β-ray-induced X-ray spectrometry to in situ measurements of tritium retention in plasma-facing materials in ITER
Applicability of β-ray-induced X-ray spectrometry to in situ measurements of tritium retention in plasma-facing materials in ITER
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DOI：
10.1016/j.fusengdes.2005.08.037
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发表时间：
2006-02
影响因子：
1.7
通讯作者：
M. Matsuyama;Y. Torikai;N. Bekris;M. Glugla;A. Erbe;W. Naegele;N. Noda;V. Philipps;P. Coad;Kuniaki Watanabe
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文献类型：
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作者：
M. Matsuyama;Y. Torikai;N. Bekris;M. Glugla;A. Erbe;W. Naegele;N. Noda;V. Philipps;P. Coad;Kuniaki Watanabe
使用两个 γ 发射器和 JET 中 D-T 聚变实验期间使用的带有金属支撑的偏滤器瓦片，检查了 β 射线诱导 X 射线光谱法 (BIXS) 在 ITER 中面向等离子体材料对氚保留的原位测量的适用性。对具有 γ 发射器的瓷砖的测量表明，尽管观察到的能量区域中的整体强度取决于 γ 发射器的放射性，但 γ 场的存在对 β 射线诱导的 X 射线光谱的形状没有影响。为了更准确地模拟 PFM 的容器内环境，对其中一个带有金属支撑的偏滤器块进行了 BIXS 测量。尽管金属载体具有伽马活性，但对记录的 X 射线光谱没有观察到显着影响。这些结果清楚地表明，BIXS 可应用于通过简单屏蔽 X 射线探测器的 PFM 进行氚保留的原位测量。
Applicability of β-ray-induced X-ray spectrometry (BIXS) for in situ measurements of tritium retention by plasma-facing materials in ITER was examined using two γ-emitters and a divertor tile with metallic supports employed during D–T fusion experiments in JET. Measurements of the tile with a γ-emitter showed that the presence of the γ-field has no influence in the shape of the β-ray-induced X-ray spectra, although the whole intensity in the observed energy region was dependent on radioactivity of the γ-emitters. To simulate more accurately the in-vessel environment of PFMs, one of the divertor tiles with metallic supports was subjected to BIXS measurements. Although the metallic supports were gamma active, no significant effect was observed on the recorded X-ray spectrum. These results clearly indicate that BIXS can be applied to in situ measurements of tritium retention by PFMs with a simple shielding of the X-ray detector.