Skip to main content
Fig. 10 | EPJ Techniques and Instrumentation

Fig. 10

From: An in-flight plasma diagnostic package for spacecraft with electric propulsion

Fig. 10

Variation of the RPA repeller grid voltage from -30 V to -5 V in steps of 1 V. These measurements were performed in the HIBEX test chamber equipped with the gridded ion source. The a hot filament cathode had a potential of −35 V. (a) Synopsis of all IEDFs. The IEDFs are horizontally shifted so that their peak values indicate the respective repeller voltage on the abscissa. (b) The peak of the measured IEDFs slightly depends on the chosen repeller voltage. (c) The height of the peak values of the IEDF reaches highest values for repeller voltages (−14±2) V. (d) The distribution functions appear sharpest for repeller voltages >20 eV

Back to article page