The SPEDE experiment on SMART-1: Instrument, mission, and science objectives

Details The SPEDE experiment on SMART-1: Instrument, mission, and science objectives The SPEDE experiment on SMART-1: Instrument, mission, and science objectives

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja....10004m&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #10004

Physics

Scientific paper

The SPEDE (Spacecraft Potential, Electron and Dust Experiment) experiment, consisting of two electric sensors and an electronics unit, will measure the electron flux and wave electric fields on the SMART-1 mission. The purpose of the SPEDE experiment is to monitor 1) the disturbances (electron flux, wave electric fields, and spacecraft potential variations) induced by the propulsion system, and 2) the variability of the electron density and wave electric fields first during the Earth spiraling phase and then during the Moon phase. The Moon has no magnetic field nor atmosphere, and therefore it is continuously exposed to the interplanetary space environment. The fast solar wind stream hits the dayside lunar surface and produces a tenuous wake. On a lunar orbit, the SPEDE observations are used for studying the solar wind moon interaction processes. The coupling of the solar wind with the surface produce disturbances at the edge of the wake region, which will be monitored with the SPEDE observations. When the Moon is immersed in the Earth’s magnetosphere, different kinds of interaction processes will occur. In this presentation we will introduce the SPEDE instrument and its capabilities, and discuss the science objectives and the science plan.

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