Back to Search
Start Over
A 15N-Poor Isotopic Composition for the Solar System As Shown by Genesis Solar Wind Samples.
- Source :
-
Science . 6/24/2011, Vol. 332 Issue 6037, p1533-1536. 4p. - Publication Year :
- 2011
-
Abstract
- The Genesis mission sampled solar wind ions to document the elemental and isotopic compositions of the Sun and, by inference, of the protosolar nebula. Nitrogen was a key target element because the extent and origin of its isotopic variations in solar system materials remain unknown. Isotopic analysis of a Genesis Solar Wind Concentrator target material shows that implanted solar wind nitrogen has a 15N/14N ratio of 2.18 0.02 x 10-3 (that is, ≈40% poorer in 15N relative to terrestrial atmosphere). The 15N/14N ratio of the protosolar nebula was 2.27 ± 0.03 x 10-3 which is the lowest 15N/14N ratio known for solar system objects. This result demonstrates the extreme nitrogen isotopic heterogeneity of the nascent solar system and accounts for the 15N-depleted components observed in solar system reservoirs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00368075
- Volume :
- 332
- Issue :
- 6037
- Database :
- Academic Search Index
- Journal :
- Science
- Publication Type :
- Academic Journal
- Accession number :
- 63008189
- Full Text :
- https://doi.org/10.1126/science.1204656