PMID- 26074632
OWN - NLM
STAT- Publisher
LR  - 20191120
IS  - 0094-8276 (Print)
IS  - 1944-8007 (Electronic)
IS  - 0094-8276 (Linking)
VI  - 40
IP  - 23
DP  - 2013 Dec 16
TI  - Isotopes of nitrogen on Mars: Atmospheric measurements by Curiosity's mass 
      spectrometer.
PG  - 6033-6037
AB  - [1] The Sample Analysis at Mars (SAM) instrument suite on the Mars Science 
      Laboratory (MSL) measured a Mars atmospheric(14)N/(15)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(2) and H(2)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(14)N/(15)N and(40)Ar/(14)N ratios. Recent MSL/SAM measurements of 
      the(40)Ar/(14)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.
FAU - Wong, Michael H
AU  - Wong MH
AD  - Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan 
      Ann Arbor, Michigan, USA ; Astronomy Department, University of California 
      Berkeley, California, USA.
FAU - Atreya, Sushil K
AU  - Atreya SK
AD  - Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan 
      Ann Arbor, Michigan, USA.
FAU - Mahaffy, Paul N
AU  - Mahaffy PN
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Franz, Heather B
AU  - Franz HB
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Malespin, Charles
AU  - Malespin C
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Trainer, Melissa G
AU  - Trainer MG
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Stern, Jennifer C
AU  - Stern JC
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Conrad, Pamela G
AU  - Conrad PG
AD  - Code 699, NASA Goddard Space Flight Center Greenbelt, Maryland, USA.
FAU - Manning, Heidi L K
AU  - Manning HL
AD  - Department of Physics, Concordia College Moorhead, Minnesota, USA.
FAU - Pepin, Robert O
AU  - Pepin RO
AD  - School of Physics and Astronomy, University of Minnesota Minneapolis, Minnesota, 
      USA.
FAU - Becker, Richard H
AU  - Becker RH
AD  - School of Physics and Astronomy, University of Minnesota Minneapolis, Minnesota, 
      USA.
FAU - McKay, Christopher P
AU  - McKay CP
AD  - NASA Ames Research Center Moffet Field, California, USA.
FAU - Owen, Tobias C
AU  - Owen TC
AD  - Institute for Astronomy, University of Hawai'i at Manoa Honolulu, Hawaii, USA.
FAU - Navarro-Gonzalez, Rafael
AU  - Navarro-Gonzalez R
AD  - Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico Mexico 
      City, Mexico.
FAU - Jones, John H
AU  - Jones JH
AD  - NASA Johnson Space Center Houston, Texas, USA.
FAU - Jakosky, Bruce M
AU  - Jakosky BM
AD  - LASP, University of Colorado Boulder Colorado, USA.
FAU - Steele, Andrew
AU  - Steele A
AD  - Geophysical Laboratory, Carnegie Institution of Washington Washington, District 
      of Columbia, USA.
LA  - eng
PT  - Journal Article
DEP - 20131209
PL  - United States
TA  - Geophys Res Lett
JT  - Geophysical research letters
JID - 9882887
PMC - PMC4459194
EDAT- 2013/12/16 00:00
MHDA- 2013/12/16 00:00
PMCR- 2015/06/08
CRDT- 2015/06/16 06:00
PHST- 2013/09/03 00:00 [received]
PHST- 2013/11/18 00:00 [revised]
PHST- 2013/11/09 00:00 [accepted]
PHST- 2015/06/16 06:00 [entrez]
PHST- 2013/12/16 00:00 [pubmed]
PHST- 2013/12/16 00:00 [medline]
PHST- 2015/06/08 00:00 [pmc-release]
AID - 10.1002/2013GL057840 [doi]
PST - ppublish
SO  - Geophys Res Lett. 2013 Dec 16;40(23):6033-6037. doi: 10.1002/2013GL057840. Epub 
      2013 Dec 9.