Computer Science
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992gecoa..56.1625h&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 56, April 1992, p. 1625-1631.
Computer Science
3
Cosmochemistry, Mass Spectroscopy, Meteoritic Composition, Molecular Gases, Nitrogen Isotopes, Trace Elements, Cosmic Rays, Lunar Rocks, Lunar Surface
Scientific paper
The case of the anomalous phenomena observed by Hashiuzume and Sugiura (1990) during the mass spectroscopy of N2 gas enriched in a cosmogenic component is considered. It is argued that the only possible consistent explanation for the phenomena is that the nitrogen molecules are not isotopically equilibrated between the trapped nitrogen component and the cosmogenic nitrogen component whose isotopic ratios are extremely different. Results are presented of numerical and experimental simulations to explain the observed phenomena on the basis of the hypothesis of the isotopic nonequilibration of nitrogen molecules. Incomplete isotopic equilibration of nitrogen molecules may lead to an underestimation of the amount of cosmogenic nitrogen by a factor of approximately 2.
Hashizume K.
Sugiura Naoji
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