The time interval between nucleosynthesis and formation of the earth

Details The time interval between nucleosynthesis and formation of the earth The time interval between nucleosynthesis and formation of the earth

Jun 1961

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961gecoa..24...40k&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 24, Issue 1-2, pp.40-47

Physics

6

Scientific paper

The differences ( i ) in the abundance ratios of the stable xenon isotopes in meteorites and in the earth's atmosphere indicate that the latter contains an excess of fissiogenic xenon. It is postulated that the "extinct" transuranium elements, such as Pu 244 and Cm 247 , played important roles in the production of the fissiogenic xenon in the earth's atmosphere. The time interval ( ) between the nucleosynthesis and the formation of the earth has been calculated from the values of i . If it is assumed that the contribution from the Cm 247 spontaneous fission and the U 235 neutron-induced fission was negligible, a value of = 4.8 × 10 8 years is obtained for the single event model and a value of = 0.52 × 10 8 years for the continuous synthesis model.

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