Cosmogenic nuclear reactions in iron meteorites

Details Cosmogenic nuclear reactions in iron meteorites Cosmogenic nuclear reactions in iron meteorites

Sep 1960

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1960gecoa..20....5f&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 20, Issue 1, pp.5-14

Physics

7

Scientific paper

The cosmogenic He 3 , He 4 , Ne 21 , Ne 22 , Ar 36 and Ar 38 isotopes have been measured mass spectrometrically in seven ataxites and one octahedrite. An attempt at analysis of these and previous data is made based on nuclear reactions induced by high-energy protons. A combination of He 3 /He 4 , He 3 /Ar 38 and Ne 21 /Ar 38 ratios are used as a measure of the energy and intensity of the incident radiation. Factors contributing to anomalous ratios are discussed. Exposure ages are deduced on the basis of these ratios, total isotopic abundances, and previously measured Cl 36 values.

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