The Electrostatic Lunar Dust Analyzer (ELDA): Data Analysis

Details The Electrostatic Lunar Dust Analyzer (ELDA): Data Analysis The Electrostatic Lunar Dust Analyzer (ELDA): Data Analysis

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufm.p13d1719x&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #P13D-1719

Physics

[5494] Planetary Sciences: Solid Surface Planets / Instruments And Techniques, [6213] Planetary Sciences: Solar System Objects / Dust, [6250] Planetary Sciences: Solar System Objects / Moon

Scientific paper

Continual micrometeoroid bombardment and electrostatic charging of the lunar surface are natural mechanisms that can mobilize micron and sub-micron sized dust particles on the lunar surface. 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, which makes their detection difficult by traditional methods based on momentum transfer or impact energy. The Electrostatic Lunar Dust Analyzer (ELDA) is a recently developed instrument concept, where the charge on the moving dust is detected. 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 basic prototype of the ELDA instrument has been constructed, tested and characterized in the laboratory. Here we present the method of analyzing the EDLA data. The particles in ELDA do not move on a straight line due to gravitational acceleration and the intentional deflection using an electrostatic field. The measurements are matched with numerical simulations and the best fit yields the particle characteristics.

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