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- W4317693614 abstract "Interactions between the charged plasma of the space environment and spacecraft lead to electric charge accumulating on its surface. Methods for remotely measuring an object's electric potential have been explored and experimentally validated in vacuum chamber conditions. To use these methods however, an additional current is applied to the target by a continuously emitting electron beam, altering the potential of the target. Pulsing has been proposed to reduce the net current applied to the target. In this paper, the use of a pulsed beam for the secondary electron method is experimentally explored in vacuum chamber conditions. To validate the secondary electron method, pulsed beams with duty cycles of 0.1 and 0.01 are used to accurately measure a -500 V potential. A comparison of charging behavior shows that using a pulsed beam has a similar effect as a continuous beam scaled by the duty cycle of the pulsed beam. It is also shown that, for a beam with the same current, a pulsed beam reduces the change in electric potential of the target by more than 90% for multiple beam energies. For this experimental setup, the results of this paper suggest that implementing a pulsed beam is an effective method for remotely sensing a target's potential while minimally perturbing the potential." @default.
- W4317693614 created "2023-01-22" @default.
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- W4317693614 date "2023-01-19" @default.
- W4317693614 modified "2023-10-14" @default.
- W4317693614 title "Experimental Validation of Touchless Electric Potential Sensing Using a Pulsed Electron Beam" @default.
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- W4317693614 doi "https://doi.org/10.2514/6.2023-1769" @default.
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