Concept information
Preferred term
IDM
Definition
- The ion drift meter (IDM) is a modified Faraday cup mounted on a satellite which measures the bulk flow of the plasma in the horizontal and vertical directions at right angles to the satellite's direction of motion. Ion drift meters build by the Center for Spcae Sciences have flown on NASA's Atmospheric Explorer series (AE) in the 1970s, NASA's Dynamics Explorer-2 (DE-2) in 1981, the DMSP military satellites from F8 (launched 1987) through the present time, and will fly on the Taiwanese satellite ROCSAT to be launched in 1998. satellite in 1981. Although there are slight differences in design between each of these, essentially the overall configuration is the same for all of them. Additional information available at "http://utd500.utdallas.edu/~hairston/idm.html" [Summary provided by The University of Texas at Dallas] (en)
Broader concept
- Particle Detectors (en)
URI
https://gcmd.earthdata.nasa.gov/kms/concept/79ae7e24-d6ff-4f1d-a4fc-5ca7214291b0
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