EUV spectral shape variation of tungsten unresolved transition arrays in electron temperature range of 2-4 keV observed in the Large Helical Device
EUV spectral shape variation of tungsten unresolved transition arrays in electron temperature range of 2-4 keV observed in the Large Helical Device
复制标题
在大型螺旋装置中观察到的 2-4 keV 电子温度范围内钨未分辨跃迁阵列的 EUV 光谱形状变化
DOI：
10.1088/1742-6596/2439/1/012005
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Goto M
中科院分区：
文献类型：
--
作者：
Oishi T;Morita S;Murakami I;Kato D;Sakaue H A;Kawamoto Y;Kawate T;Goto M
结合颗粒注入技术，在大螺旋装置中对钨离子释放的光谱进行了研究。在极紫外（EUV） 6 ~ 60 Å和130 ~ 340 Å波长范围内观察到钨未解析跃迁阵列（UTA）光谱，并在电子温度< 4.3 keV范围内研究了UTA光谱形状对电子温度的依赖关系。观察w24 + - w33 +在20-33 Å、w37 + - w42 +在45-47 Å、w27 + - w29 +在48-55 Å、w7 + - w27 +在170-210 Å的UTAs。在230 ~ 270 Å和280 ~ 320 Å也发现了不明UTAs。随着电子温度在4 keV以上进一步升高，45-47 Å处的w37 + - w42 + UTA得到维持，其他UTA强度减弱。
Spectroscopic studies of emissions released from tungsten ions combined with a pellet injection technique have been conducted in the Large Helical Device. The tungsten Unresolved Transition Array (UTA) spectrum was observed in the wavelength ranges of extreme ultraviolet (EUV) 6–60 Å and 130–340 Å, and the electron temperature dependence of the UTA spectral shape was investigated in the electron temperature region< 4.3 keV. The UTAs of W 24+–W 33+ at 20–33 Å, W 37+–W 42+ at 45–47 Å, W 27+–W 29+ at 48–55 Å, and W 7+–W 27+ at 170–210 Å were observed. Unidentified UTAs were also found at 230–270 Å and 280–320 Å. As the electron temperature increased further above 4 keV, the W 37+–W 42+ UTA at 45–47 Å was maintained, while the other UTAs became less intense.