About two decades ago, very unusual highly-resolved x-ray spectra were observed using a femtosecond laser-produced plasma that included a new type of satellite lines identified as being emitted from the autoionizing states of hollow ions (such as, for example, exotic KK hollow ions with the empty K shell). Though atomic structure calculations were able to predict the locations of such newly observed spectral features with reasonable precision, the relatively high intensity of these so-called hypersatellite lines, produced mainly in high-power laser plasmas, is far from being understood. The analysis of previous experiments with Teflon on the Leopard laser performed under different conditions related to laser pulse and contrast revealed the existence of KK hollow fluorine ions and motivated systematic theoretical studies of dielectronic satellite spectra from hollow ion states starting with He- and Li-like fluorine ions presented in this paper.

中文翻译：

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氟中空 He 和 Li-like 离子态的介电子卫星光谱


大约二十年前，使用飞秒激光产生的等离子体观察到非常不寻常的高分辨 X 射线光谱，其中包括一种新型卫星线，这些卫星线被鉴定为从空心离子的自电离状态发射（例如，带有空 K 壳层的奇异 KK 空心离子）。尽管原子结构计算能够以合理的精度预测这些新观察到的光谱特征的位置，但这些主要在高功率激光等离子体中产生的所谓超卫星线的相对高强度还远未得到了解。对以前在与激光脉冲和对比度相关的不同条件下在 Leopard 激光器上进行的特氟龙实验的分析揭示了 KK 空心氟离子的存在，并激发了本文提出的从空心离子状态开始的介电卫星光谱的系统理论研究。