NASA NTRS · 19840031039
Isotopically anomalous nitrogen in primitive meteorites
Abstract
The extreme enrichement in N-14 (up to 48 percent) found in acid-resistant residues of the Allende and Murchison meteorites cannot be attained by normal solar system processes and must therefore be due to stellar nucleosynthesis. Consequently the xenon component enriched in the heavy isotopes associated with the light nitrogen very probably was made by stellar nucleosynthesis rather than by fission of an extinct superheavy element.
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Lewis, R. S., Anders, E., Wright, I. P., Norris, S. J., Pillinger, C. T.. 1983-10-27. Isotopically anomalous nitrogen in primitive meteorites. https://ntrs.nasa.gov/citations/19840031039
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