Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p33c1580x&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P33C-1580
Physics
[5494] Planetary Sciences: Solid Surface Planets / Instruments And Techniques, [6015] Planetary Sciences: Comets And Small Bodies / Dust
Scientific paper
Micron and sub-micron sized dust particles can be lifted from the lunar surface due to continual micrometeoroid bombardment and electrostatic charging. The characteristics of these dust populations are of scientific interest and engineering importance for the design of future equipment to operate on the lunar surface. The mobilized grains are expected to have a low velocity (<100 m/s) which makes their detection difficult by traditional methods based on momentum transfer or impact energy. We describe a newly developed instrument, the Electrostatic Lunar Dust Analyzer (ELDA), which utilizes the charge on the dust for detection and analysis. ELDA consists of an array of wire electrodes combined with an electrostatic deflection field region, and measures the mass, charge, and velocity vector of individual dust grains. The first prototype of the ELDA instrument has been constructed, tested and characterized in the laboratory.
Auer Stefan
Drake K.
Duncan N. A.
Gruen Eberhard
Horanyi Mihaly
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