An ionic liquid (IL) electrospray thruster was developed for application in micro-nano satellites or gravitational wave detectors. The thruster employed a porous ceramic emitter with seven emitter strips located on its emission surface. Without any liquid-supply device, IL was delivered through porous media to emitter strips via capillary effect. Multiple emission sites then formed at the tip of each strip. A charged beam of up to 350 μ A (with a current density of 540 μ A cm −2 ) was stably produced in the negative mode. However, in the positive mode, a corona was observed which could prevent the thruster from emitting larger current. A time-of-flight mass spectrometer with significantly improved signal-to-noise ratio was built, which was used to obtain the mass distribution of the beam of the thruster. A retarding potential analysis was also performed. The test results showed that the thruster worked in the pure-ion regime, and delivered a maximum thrust o...

中文翻译：

---

具有多孔陶瓷发射器的离子液体电喷雾推进器的表征

开发了一种离子液体（IL）电喷雾推进器，用于微纳卫星或重力波探测器。推进器采用多孔陶瓷发射器，发射器表面有七个发射条。在没有任何液体供应装置的情况下，IL通过多孔介质通过毛细作用通过多孔介质传输到发射条。然后在每个条的尖端形成多个发射位点。在负模式下稳定地产生了高达350μA的带电光束（电流密度为540μA cm -2）。但是，在正向模式下，会观察到电晕，这可能会阻止推进器发出更大的电流。建立了一个飞行时间质谱仪，该质谱仪的信噪比得到了显着改善，用于获得推进器光束的质量分布。还进行了阻滞电位分析。测试结果表明，推进器工作在纯离子状态，并提供最大推力。