Employing the dual laser plasma technique, we measured the extreme ultraviolet (EUV) photoabsorption spectrum of F ions, spanning the energy range from 53 to 93 eV with an energy resolution () of 866. The measured spectrum is carefully analyzed by comparing with the available reference data and theoretical calculation using the Cowan code. We identify prominent transitions to the Rydberg series and from the ground level and remarkable transitions to the states from the metastable level. Transition energies and line profile parameters are determined by fitting the identified absorption features. The calibration of the spectrometer with well-known transitions allows us to provide line positions for well-resolved resonances with an uncertainty of 20 meV. The reported experimental data of F significantly contribute to the fundamental atomic database, offering valuable benchmarks for theoretical calculations with potential applications in astrophysics and plasma sciences.

中文翻译：

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使用双激光等离子体技术的 N 类氟的 EUV 光吸收光谱

采用双激光等离子体技术，我们测量了 F 离子的极紫外 (EUV) 光吸收光谱，能量范围为 53 至 93 eV，能量分辨率 () 为 866。通过与现有光谱进行比较，对测量的光谱进行了仔细分析。使用Cowan代码的参考数据和理论计算。我们确定了从底层到里德伯级数的显着转变，以及从亚稳态到状态的显着转变。通过拟合识别的吸收特征来确定跃迁能量和线轮廓参数。具有众所周知的跃迁的光谱仪校准使我们能够提供具有 20 meV 不确定度的良好解析共振的线位置。报告的 F 实验数据对基础原子数据库做出了重大贡献，为理论计算提供了有价值的基准，并在天体物理学和等离子体科学中具有潜在应用。