Dannenmayer K, Mazouffre S
ICARE, CNRS, 1c Avenue de la Recherche Scientifique, 45071 Orléans, France.
Rev Sci Instrum. 2012 Dec;83(12):123503. doi: 10.1063/1.4769052.
A compact high-speed reciprocating probe system has been developed in order to perform measurements of the plasma parameters by means of electrostatic probes in the discharge and the plume of a Hall thruster. The system is based on a piezoelectric linear drive that can achieve a speed of up to 350 mm/s over a travel range of 90 mm. Due to the high velocity of the linear drive the probe can be rapidly moved in and out the measurement region in order to minimize perturbation of the thruster discharge due to sputtering of probe material. To demonstrate the impact of the new system, a heated emissive probe, installed on the high-speed translation stage, was used to measure the plasma potential and the electron temperature in the near-field plume of a low power Hall thruster.
为了通过静电探针测量霍尔推力器放电和羽流中的等离子体参数，已开发出一种紧凑的高速往复式探针系统。该系统基于压电线性驱动器，在90毫米的行程范围内，速度可达350毫米/秒。由于线性驱动器的速度很高，探针可以快速进出测量区域，以尽量减少由于探针材料溅射对推力器放电造成的扰动。为了证明新系统的影响，安装在高速平移台上的加热发射探针被用于测量低功率霍尔推力器近场羽流中的等离子体电势和电子温度。
