Analysis of tungsten laser produced plasmas in the extreme ultraviolet (EUV) spectral region
Analysis of tungsten laser produced plasmas in the extreme ultraviolet (EUV) spectral region
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DOI：
10.1088/0953-4075/45/20/205002
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发表时间：
2012-10
期刊：
影响因子：
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通讯作者：
C. S. Harte;T. Higashiguchi;T. Otsuka;R. D’Arcy;D. Kilbane;G. O’Sullivan
中科院分区：
文献类型：
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作者：
C. S. Harte;T. Higashiguchi;T. Otsuka;R. D’Arcy;D. Kilbane;G. O’Sullivan
钨将被用作ITER中的壁材料，因此将作为本征等离子体杂质存在，所产生的发射具有用作等离子体诊断的潜力。我们用Nd：YAG激光器在一定的功率密度范围内工作，记录了钨激光等离子体在1-7 nm范围内的光谱。我们分析了这些光谱，特别注意在最高激光功率密度出现在3 nm区域的未解决的过渡阵列。我们将我们的结果与以前的工作进行比较，并使用新的原子结构计算来确定一些新的功能。
Tungsten will be used as a wall material in ITER and therefore will be present as an intrinsic plasma impurity with the resulting emission having the potential to be used as a plasma diagnostic. We have recorded spectra of tungsten laser produced plasmas in the 1–7 nm region using Nd:YAG lasers operating at a range of power densities. We have analysed these spectra, giving special attention to the unresolved transition arrays in the 3 nm region that appear at the highest laser power densities. We compare our results to those from previous work and also use new atomic structure calculations to identify a number of new features.