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- W2967462661 abstract "NASA is continuing the development of a 12.5-kW Hall thruster system to support a phased exploration concept to expand human presence to cis-lunar space and eventually to Mars. The development team is transitioning knowledge gained from the testing of the government-built Technology Development Unit (TDU) to the contractor-built Engineering Test Unit (ETU). A new laser-induced fluorescence diagnostic was developed to obtain data for validating the Hall thruster models and for comparing the behavior of the ETU and TDU. Analysis of TDU LIF data obtained during initial deployment of the diagnostics revealed evidence of two streams of ions moving in opposite directions near the inner front pole. These two streams of ions were found to intersect the downstream surface of the front pole at large oblique angles. This data points to a possible explanation for why the erosion rate of polished pole covers were observed to decrease over the course of several hundred hours of thruster operation." @default.
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- W2967462661 date "2019-08-16" @default.
- W2967462661 modified "2023-09-25" @default.
- W2967462661 title "Evidence of Counter-Streaming Ions near the Inner Pole of the HERMeS Hall Thruster" @default.
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- W2967462661 doi "https://doi.org/10.2514/6.2019-3897" @default.
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