Emission lines which appear in the spectral ranges of ground state transitions from n = 2 levels in He- and H-like argon ions are discussed. X-ray transitions from elements commonly found in tokamaks (tungsten, molybdenum, iron and sulphur) which radiate in the wavelength range from 3700–4000 m are identified by comparison with atomic structure calculations. Individual lines from tungsten charge states in the vicinity of Zn-like W⁴⁴⁺ are documented, along with B-like Mo³⁷⁺. The behaviour of line ratios as a function of electron temperature is examined, in support of the identifications.

中文翻译：

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钨和托卡马克中常见的其他元素对氩 X 射线光谱的污染

讨论了在 He 和 H 类氩离子中从n = 2 能级的基态跃迁光谱范围中出现的发射线。通过与原子结构计算进行比较，确定了在 3700-4000 m 波长范围内辐射的托卡马克中常见元素（钨、钼、铁和硫）的 X 射线跃迁。记录了类锌 W ⁴⁴⁺附近钨电荷态的单条谱线，以及类 B 的 Mo ³⁷⁺。检查作为电子温度函数的线比的行为，以支持识别。