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Science 11 April 1975:
Vol. 188. no. 4184, pp. 162 - 164
DOI: 10.1126/science.188.4184.162
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Articles

Solar Nitrogen: Evidence for a Secular Increase in the Ratio of Nitrogen-15 to Nitrogen-14

John F. Kerridge 1

1 Institute of Geophysics and Planetary Physics, University of California, Los Angeles 90024

Solar wind nitrogen, implanted in lunar soil samples, exhibits isotopic variations that are related to the time, although not to the duration, of implantation, with earlier samples characterized by lower ratios of nitrogen-15 to nitrogen-14. An increase in the solar nitrogen-15 content during the lifetime of the lunar regolith is probably caused by spallation of oxygen-16 in the surface regions of the sun.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Oxygen Isotopes in the Early Solar System -- A Historical Perspective.
R. N. Clayton (2008)
Reviews in Mineralogy and Geochemistry 68, 5-14
   Abstract »    Full Text »    PDF »
Oxygen in the Sun.
A. M. Davis, K. Hashizume, M. Chaussidon, T. R. Ireland, C. A. Prieto, and D. L. Lambert (2008)
Reviews in Mineralogy and Geochemistry 68, 73-92
   Abstract »    Full Text »    PDF »
Noble Gases in the Solar System.
R. Wieler (2002)
Reviews in Mineralogy and Geochemistry 47, 21-70
   Full Text »    PDF »
Isotopic Variability of Nitrogen in Lunar Regolith.
J. F. Kerridge, K. Hashizume, M. Chaussidon, B. Marty, and F. Robert (2001)
Science 293, 1947a-1947
   Full Text »    PDF »
What Has Caused the Secular Increase in Solar Nitrogen-15?.
J. F. Kerridge and J. F. KERRIDGE (1989)
Science 245, 480-486
   Abstract »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)