The Galileo Probe Mass spectrometer (GPMS) is an instrument designed to measure the chemical and isotopic composition in the atmosphere of Jupiter, including the vertical variations of the constituents. The measurements were performed by in-situ sampling of the ambient atmosphere in the pressure range from approximately 0.5 to 21 bars. In addition, batch sampling was performed for noble gas composition measurement and isotopic ratio determination, and for sensitivity enhancement of non-reactive trace gases.
urn:nasa:pds:context:instrument:gpms.gp
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