Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p23c1262x&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #P23C-1262
Physics
[6250] Planetary Sciences: Solar System Objects / Moon
Scientific paper
The Lunar Dust EXperiment (LDEX) instrument is under development for the Lunar Atmosphere and Dust Environment Explorer (LADEE) to be launched in 2012. The LDEX instrument is designed to map the properties and temporal and spatial variations of the dust population in the vicinity of the Moon. The operation of the instrument is based on the impact ionization process, where free electrons and ions are generated upon the hypervelocity impact of the dust on a hemispherical target surface. The electrons and ions are separated by electric field and measured on the target and a microchannel plate (MCP) detector, respectively. The total charge is a measure of the dust mass and impact velocity. LADEE will orbit the Moon with small inclination (<20 degree) in the retrograde direction and LDEX will be pointed in the ram direction to sample the dust. The UV radiation from the Sun or reflected from the lunar surface can enter the LDEX instrument and will generate noise and thus limit the lower detection threshold of dust particles. In this paper we present the modeling of UV radiation reaching the MCP detector on different parts of the orbit. The modeling is performed by using the Zemax ray-tracing software. The preliminary results indicate that the detection limit will be > 0.25 micron radius dust for single impact detection. The results are also used to define the required optical properties of surfaces used in the LDEX instrument.
Crotser David
Horanyi Mihaly
Sternovsky Zoltan
Xie Jinjing
No associations
LandOfFree
The effect of UV reflected back from the lunar surface on the detection of dust particles by the LDEX (Lunar Dust EXperiment) instrument does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effect of UV reflected back from the lunar surface on the detection of dust particles by the LDEX (Lunar Dust EXperiment) instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effect of UV reflected back from the lunar surface on the detection of dust particles by the LDEX (Lunar Dust EXperiment) instrument will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1769703