Physics
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007epsc.conf..346k&link_type=abstract
European Planetary Science Congress 2007, Proceedings of a conference held 20-24 August, 2007 in Potsdam, Germany. Online at ht
Physics
Scientific paper
The moon is wrapped into an envelop of dust ejecta produced by impacts of meteoroids of either interplanetary or interstellar origin. Knowledge the spatial distribution of the ejecta allows to answer the old question whether the moon looses mass or not. Furthermore, the moon may be envisioned as a large area dust detector for the impactors. Thus, the spatial distribution of the dust in the vicinity of the moon also provides information about the relative contributions of the impactor sources to the total dust flux at the Earth orbit. Here we introduce a dust detector designed to detect slow moon ejecta by means of the induced charges onto an array of electrode wires. This technique allows to determine the ejecta speed with 1and 10 km/s) and the particle's trajectory with about 1 degree accuracy. The detector has a sensitive area of about 0.1m2 and can detect a wide range of particle sizes from 0.2μm to 100μm. Application of this detector is a lunar orbiter as currently discussed by several space agencies.
Grün Eberhard
Henkel Hartmut
Kempf Sascha
Laufer Rafael
Moragas-Klostermeyer Georg
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