空心阴极放电中 Kr II 的 4d$^4D_{7/2}\rightarrow$5p$^4P^\circ_{5/2}$ 跃迁的激光诱导荧光探测
Laser-induced fluorescence detection of the 4d$^4D_{7/2}\rightarrow$5p$^4P^\circ_{5/2}$ transition of Kr II in a hollow cathode discharge
AI总结：
面向氪工质电推进的离子速度 LIF 诊断需求，研究在空心阴极放电中采用 Kr II 的 4d⁴D7/2→5p⁴P°5/2 跃迁，以确定静止离子激发波长。
摘要：
电推进需要详尽的地面测试活动，以获得航天器所使用的推进装置（即推力器）的准确特性。在测试期间精确测量的众多等离子体参数中，离子速度是关键参数，并可使用激光诱导荧光（LIF）诊断等非介入式工具进行测量。离子速度通过多普勒频移测量来推断，而这需要精确、准确地掌握静止离子的激发波长。如今，由于此前普遍使用且性能更优的氙气推进剂成本急剧上升，电推进正转向使用氪作为推进剂。在本工作中，Kr II 的 4d$^4D_{7/2}\rightarrow$5p$^4P^\circ_{5/2}$ 跃迁被用于空心阴极放电中的 LIF 诊断。
英文摘要：
Electric propulsion requires exhaustive ground test campaigns to obtain an accurate characterization of the propulsion devices, or thrusters, used by the spacecraft. Among the many plasma parameters, accurately measured during the tests, that of the ion velocity is key, and can be measured using non-intrusive tools such as Laser-Induced Fluorescence (LIF) diagnostics. The ion velocity is inferred by Doppler shift measurements that presupposes a precise and accurate knowledge of the wavelength of excitation of the ions at rest. Today electric propulsion is moving towards the use of Krypton as a propellant, due to the dramatic increase in cost of the more advantageous Xenon gas propellant, commonly used until now. In this work the 4d$^4D_{7/2}\rightarrow$5p$^4P^\circ_{5/2}$ transition of Kr II is used for LIF diagnostic in hollow cathode discharge.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
