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A possible organic contribution to the low temperature co2 release seen in mars phoenix thermal and evolved gas analyzer data
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Niles, P. B. Archer Jr., P. D. Jr Boynton, W. V. Sutter, B. Ming, D. W. Lauer Jr., H. V. |
| Copyright Year | 2012 |
| Description | Two of the most important discoveries of the Phoenix Mars Lander were the discovery of approx.0.6% perchlorate [1] and 3-5% carbonate [2] in the soils at the landing site in the martian northern plains. The Thermal and Evolved Gas Analyzer (TEGA) instrument was one of the tools that made this discovery. After soil samples were delivered to TEGA and transferred into small ovens, the samples could be heated up to approx.1000 C and the gases that evolved during heating were monitored by a mass spectrometer. A CO2 signal was detected at high temperature (approx.750 C) that has been attributed to calcium carbonate decomposition. In addition to this CO2 release, a lower temperature signal was seen. This lower temperature CO2 release was postulated to be one of three things: 1) desorption of CO2, 2) decomposition of a different carbonate mineral, or 3) CO2 released due to organic combustion. Cannon et al. [3] present another novel hypothesis involving the interaction of decomposition products of a perchlorate salt and calcium carbonate. |
| File Size | 178683 |
| Page Count | 2 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120001838 |
| Archival Resource Key | ark:/13960/t9479cs3n |
| Language | English |
| Publisher Date | 2012-01-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Science And Exploration Landing Sites Carbon Dioxide Calcium Carbonates Combustion Decomposition Desorption Minerals High Temperature Perchlorates Soil Sampling Heating Planetary Geology Phoenix Mars Lander Mars Surface Gas Detectors Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
