A study on cosmogenic nuclides in the Jilin meteorite and its irradiation history

Details A study on cosmogenic nuclides in the Jilin meteorite and its irradiation history A study on cosmogenic nuclides in the Jilin meteorite and its irradiation history

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982geoch...1..421o&link_type=abstract

Geochemistry (ISSN 0253-486X), vol. 1, Oct.-Dec. 1982, p. 421-434.

Computer Science

Irradiation, Meteoritic Composition, Radioactive Isotopes, Rare Gases, Argon Isotopes, Helium Isotopes, Neon Isotopes, Spatial Distribution

Scientific paper

Measurements on 44 Jilin samples show the rare gases to be unevenly distributed in the meteorite. Correlations are found among Ne-20, Ne-22, He-3, Ar-38, and Ne-21. The ratio of Ne-22 to Ne-21 is 1.07 + or - 0.01, and that of Ne-20 to Ne-21 is 0.95 + or - 0.04. The spallogenic gases exhibit unusual depth effects. Determinations for cosmogenic radionuclides are made in 35 samples. The following ranges are obtained: Co-60, 33-260 dpm/kg; Mn-53, 60-191 dpm/kg; and Al-26, 12-49 dpm/kg. On the basis of a two-stage model and the concentration of Ne-21 and Co-60 in the samples, a scheme is proposed for restoring the relative position of all samples in the parent body.

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