Secondary electron emission from lunar soil: Yields, energy distributions, and charging effects

作者：Dukes Catherine A; Baragiola Raul A^*

来源：Planetary and Space Science, 2013, 89: 36-41.

DOI：10.1016/j.pss.2013.04.011

• Lunar regolith
• Moon
• Secondary electron emission
• Electrostatic charging

We report the electron emission and charging of sub-mature lunar highland soil 61241 by electron impact under ultra-high vacuum for 40-2000 eV electrons. The energy distribution of emitted secondary electrons was measured as a function of primary electron energy under neutral charging conditions, and electron energy loss spectroscopy was used to determine the similar to 8 eV band gap. Total electron yields were obtained with low electron fluxes. Imaging the soil with a Scanning Auger Microprobe using 10 key electrons revealed differential grain motion induced by charging in ultra-high vacuum.

• 出版日期2013-12