Time Interval between Nucleogenesis and the Formation of Meteorites

Details Time Interval between Nucleogenesis and the Formation of Meteorites Time Interval between Nucleogenesis and the Formation of Meteorites

Jul 1955

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1955natur.176..130w&link_type=abstract

Nature, Volume 176, Issue 4472, pp. 130-131 (1955).

Computer Science

5

Scientific paper

WHILE determining the radiogenic argon-40 content of the Beardsley chondritic meteorite1, a mass spectrometric search for xenon-129 produced by decay of iodine-129 was made. The total amount of xenon which was observed was 5 × 10-9 c.c. (s.t.p.) from a 29.86-gm. meteorite sample. Within the limits of experimental error, this xenon had a normal isotopic composition2. The ratio of xenon to argon-36 was in essential agreement with that found in air, indicating that this xenon was due to atmospheric contamination. Since a 30 per cent increase in the abundance of xenon-129 over that observed in normal xenon would have been observable, this indicates that radiogenic xenon-129 was present in this meteorite to less than 1.3 × 10-11 c.c. (s.t.p.)/gm. H. E. Suess and M. G. Inghram (personal communication) have suggested that if the meteorites had been formed soon after the formation of the elements, they would contain an excess of xenon-129 due to decay of iodine-129.

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