Isotopes of nitrogen on Mars: Atmospheric measurements by Curiosity's mass spectrometer
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- Michael H. Wong
- Department of Atmospheric, Oceanic, and Space Sciences University of Michigan Ann Arbor Michigan USA
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- Sushil K. Atreya
- Department of Atmospheric, Oceanic, and Space Sciences University of Michigan Ann Arbor Michigan USA
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- Paul N. Mahaffy
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Heather B. Franz
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Charles Malespin
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Melissa G. Trainer
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Jennifer C. Stern
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Pamela G. Conrad
- Code 699 NASA Goddard Space Flight Center Greenbelt Maryland USA
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- Heidi L. K. Manning
- Department of Physics Concordia College Moorhead Minnesota USA
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- Robert O. Pepin
- School of Physics and Astronomy University of Minnesota Minneapolis Minnesota USA
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- Richard H. Becker
- School of Physics and Astronomy University of Minnesota Minneapolis Minnesota USA
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- Christopher P. McKay
- NASA Ames Research Center Moffet Field California USA
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- Tobias C. Owen
- Institute for Astronomy University of Hawai‘i at Mānoa Honolulu Hawaii USA
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- Rafael Navarro‐González
- Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México México City México
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- John H. Jones
- NASA Johnson Space Center Houston Texas USA
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- Bruce M. Jakosky
- LASP University of Colorado Boulder Colorado USA
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- Andrew Steele
- Geophysical Laboratory Carnegie Institution of Washington Washington District of Columbia USA
書誌事項
- 公開日
- 2013-12-09
- 権利情報
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- http://creativecommons.org/licenses/by-nc-nd/3.0/
- DOI
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- 10.1002/2013gl057840
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>The Sample Analysis at Mars (SAM) instrument suite on the Mars Science Laboratory (MSL) measured a Mars atmospheric<jats:sup>14</jats:sup>N/<jats:sup>15</jats:sup>N ratio of 173 ± 11 on sol 341 of the mission, agreeing with Viking's measurement of 168 ± 17. The MSL/SAM value was based on Quadrupole Mass Spectrometer measurements of an enriched atmospheric sample, with CO<jats:sub>2</jats:sub> and H<jats:sub>2</jats:sub>O removed. Doubly ionized nitrogen data at m/z 14 and 14.5 had the highest signal/background ratio, with results confirmed by m/z 28 and 29 data. Gases in SNC meteorite glasses have been interpreted as mixtures containing a Martian atmospheric component, based partly on distinctive<jats:sup>14</jats:sup>N/<jats:sup>15</jats:sup>N and<jats:sup>40</jats:sup>Ar/<jats:sup>14</jats:sup>N ratios. Recent MSL/SAM measurements of the<jats:sup>40</jats:sup>Ar/<jats:sup>14</jats:sup>N ratio (0.51 ± 0.01) are incompatible with the Viking ratio (0.35 ± 0.08). The meteorite mixing line is more consistent with the atmospheric composition measured by Viking than by MSL.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 40 (23), 6033-6037, 2013-12-09
American Geophysical Union (AGU)
