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John H. Hoffman, Professor, University of Texas
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John H. Hoffman, Professor, University of Texas
"The Thermal Evolved Gas Analyzer -TEGA- on Phoenix" TEGA consists of two instruments, a set of 8 small ovens, the T of TEGA and an Evolved Gas Analyzer, the EGA of TEGA, a mass spectrometer. Soil and ice samples are dug from a trench in the surface of Mars by the lander's robotic arm and transferred to one of the ovens. Subsequent heating releases dissolved gases from icy samples and from minerals as they decomplse very high temperatures. Elemental abundances nd istopic rations of principal constituents will ve measured. Between oven runs, atmospheric abundances and isotopic ratios will be determined. March 13, 2008 3:30 pm - 4:30 pm 2246 SRB Auditorium |
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