Comparison of Secondary Emission from Lunar Dust Simulants JSC, MLS, and LHT

Details Comparison of Secondary Emission from Lunar Dust Simulants JSC, MLS, and LHT Comparison of Secondary Emission from Lunar Dust Simulants JSC, MLS, and LHT

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p51c1452p&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P51C-1452

Physics

Plasma Physics

[2129] Interplanetary Physics / Interplanetary Dust, [6213] Planetary Sciences: Solar System Objects / Dust, [7849] Space Plasma Physics / Plasma Interactions With Dust And Aerosols

Scientific paper

Lunar dust covers a whole surface of the Moon and is bombarded by all sorts of particles - photons, electrons, ions. For further Moon exploration, the properties of dust and its charging are one of the fundamental knowledge. To investigation of charging processes, different types of simulants of the Lunar regolith were prepared as JSC, MLS, and recently LHT. We have performed series of measurements of secondary electron emission from these three simulants. The experiment is based on a quadrupole trap where the grain is levitating and is exposed to the particle beam(s). A temporal evolution of the grain charge-to-mass is recorded. Processing of these records allows us to determine the grain charge and mass and characteristics of the secondary emission process like the energy dependence of secondary electron emission and backscattering yields. These experimental results are compared with properties of glass microspheres as well as with the Monte-Carlo simulations.

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