Submitted by liem on Sat, 11/22/2014 - 17:32
The objective of the ALAE experiment is to measure atomic hydrogen and deuterium in the terrestrial atmosphere. The instrument consists of a spectrophotometer with an atomic hydrogen absorption cell and an atomic deuterium absorption cell. Various combinations of switching the cells on and off allow observations of the atmospheric deuterium layer, the atomic geocorona, and the Lyman-alpha interplanetary medium. STS-45
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