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Thermal and evolved gas analyses at reduced pressures: a mineral database for the thermal evolved gas analyzer (tega)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Morris, R. V. Boynton, W. V. Lin, I.-C. Lauer Jr., H. V. Ming, Douglas W. Golden, D. C. |
| Copyright Year | 2000 |
| Description | Volatile-bearing minerals (e.g., Fe-oxyhydroxides, phyllosilicates, carbonates, and sulfates) may be important phases on the surface of Mars. The Thermal Evolved Gas Analyzer (TEGA), which was part of the Mars Polar Lander payload, was to detect and identify volatile-bearing phases in the Martian regolith. The TEGA instrument is composed of a differential scanning calorimetry (DSC) interfaced with an evolved gas analyzer (EGA). The EGA consists of a Herriott cell of a tunable-diode laser (TDL) spectrometer that determines CO, and H2O abundances. The sample chamber in TEGA operates at about 100 mbar (-76 torr) with a N2 carrier gas flow of 0.4 sccm. Essentially no information exists on the effects of reduced pressure on the thermal properties of volatile-bearing minerals. Here we present a database for the thermal behavior of volatile-bearing phases under reduced pressure conditions. |
| File Size | 158923 |
| File Format | |
| Language | English |
| Publisher Date | 2000-01-01 |
| Access Restriction | Open |
| Subject Keyword | Volatility Pressure Reduction Oxides Minerals Gas Analysis Sulfates Zeolites Data Bases Mass Spectrometers Gas Evolution Temperature Effects Mars Surface Carbonates Thermal Analysis Iron Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
