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The need for high accuracy dust charge measurements

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The need for high accuracy dust charge measurements

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  • Author: Lorin Swint Matthews
Airless bodies such as the moon are usually covered by a layer of fine dust particles. Due to direct exposure to the solar wind and solar radiation, these dust particles are charged and may be lofted due to electrostatic forces (triboelectric charging may also occur due to human/autonomous activities). Electrostatic dust transport is suggested to explain a number of unresolved lunar observations, such as the lunar horizon glow [Criswell, 1973], the high-altitude streamers [Zook and McCoy, 1991], the low-speed dust detections during terminator crossings [Berg et al., 1976], and a recent observation of dust deposits on lunar rocks [Yan et al., 2019].

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