Laser-induced breakdown spectroscopic characterization of impurity deposition on the first wall of a magnetic confined fusion device: Experimental Advanced Superconducting Tokamak
Laser-induced breakdown spectroscopic characterization of impurity deposition on the first wall of a magnetic confined fusion device: Experimental Advanced Superconducting Tokamak
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磁约束聚变装置第一壁上杂质沉积的激光诱导击穿光谱表征：实验先进超导托卡马克
DOI：
10.1016/j.sab.2013.05.010
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发表时间：
2013-09
期刊：
影响因子：
--
通讯作者：
Luo, Guang-Nan
中科院分区：
文献类型：
--
作者：
Liu, Jiahong;Ding, Hongbin;Wu, Jing;Luo, Guang-Nan
我们最近的研究表明，激光诱导击穿光谱（LIBS）的潜力，在实验先进超导托卡马克（EAST）在真空环境中的第一壁上的共沉积层的分析。通过对200 ~ 980 nm光谱的分析，可以得到偏滤器瓦第一壁表面和深层的详细成分信息。沉积元素（如D、Li）的浓度在0 ~ 100 μm的深度内明显降低，而基底元素的浓度在几十次激光脉冲后在深度上相对均匀。首次将线性相关方法应用于提高杂质深度分布精度和识别沉积层与衬底之间的界面边界。这将有助于我们发展LIBS技术来监测EAST第一壁的燃料滞留和杂质沉积。
Our recent investigations have indicated the potential of laser-induced breakdown spectroscopy (LIBS) for analysis of the co-deposited layers on the first wall in the Experimental Advanced Superconducting Tokamak (EAST) in the vacuum environment. Detailed information of compositions at the superficial and in-depth positions of the first wall of divertor tiles can be obtained by analyzing the spectra from 200 to 980 nm. The decrease in concentrations of the depositional elements (such as D, Li) was clearly observed in the depth from 0 to 100 μm, but the concentrations of the substrate elements were found to be relatively uniform in the depth after dozens of laser pulses. The linear correlation approach has been applied for improving the impurity depth profile accuracy and identifying the interface boundary between the deposition layer and the substrate for the first time. This would help us to develop LIBS technique to monitor the fuel retention and impurity deposition on the first wall of EAST.
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作者：
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DOI：
10.1016/j.chemphys.2011.07.012
发表时间：
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期刊：
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影响因子：
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通讯作者：
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