A magnetically filtered oxygen plasma source has been developed and characterized for the purpose of simulating the low-Earth-orbit environment. The source uses a magnetic ring cusp geometry coupled with a transverse magnetic filter to produce a plasma stream consisting of streaming atomic oxygen ions with energy, density, and ion species composition corresponding to orbital conditions at altitudes ranging from 275 to 550 km. Plasma properties downstream of the source are dependent on the operational settings for source flow rate and discharge current. The properties are examined as a function of these operating parameters to optimize the production of ${\mathrm{O}}^{+}$ ions with energy and density relevant for low-Earth-orbit satellite drag applications. At each source operational setting presented in this work, the ion energy distributions are measured 0.55 m downstream of the source using a retarding potential analyzer, and the streaming ions were shown to have most probable energies ranging from 2.8 to 7 eV or 5800 to $9500\mathrm{m}\cdot {\mathrm{s}}^{-1}$. In addition, a Wein filter ($\mathrm{E}\times \mathrm{B}$) and a residual gas analyzer are used to measure the ion species percent composition as a function of the operational conditions. Source flow rate and discharge current settings are presented that allow for the composition of atomic oxygen ions to be adjusted from 63 to 90% of the total plasma ion population.

为了模拟低地球轨道环境，已经开发并表征了磁性过滤的氧等离子体源。该源使用与环形磁过滤器耦合的磁环尖头几何形状，以产生由流态原子氧离子组成的等离子流，该原子氧离子的能量，密度和离子种类组成与在275至550 km高度范围内的轨道条件相对应。源下游的等离子体特性取决于源流速和放电电流的运行设置。根据这些操作参数对性能进行检查，以优化产品的生产。${\mathrm{Ø}}^{+}$具有低地球轨道卫星阻力应用相关的能量和密度的离子。在这项工作中介绍的每个离子源操作设置下，使用延迟电势分析仪在离子源下游0.55 m处测量离子能量分布，并且显示出流态离子具有最可能的能量，范围从2.8到7 eV或从5800到5 eV。$9500\mathrm{米}\cdot {\mathrm{s}}^{-\mathrm{1个}}$。此外，Wein过滤器（$\mathrm{E}\times \mathrm{乙}$）和残留气体分析仪用于测量作为操作条件的函数的离子种类百分比组成。给出了源流速和放电电流设置，这些设置允许将原子氧离子的组成从总等离子体离子总数的63％调整到90％。