Evidence for live Cm-247 in the early solar system

Details Evidence for live Cm-247 in the early solar system Evidence for live Cm-247 in the early solar system

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.286..118t&link_type=abstract

Nature, vol. 286, July 10, 1980, p. 118-122.

Other

7

Curium Isotopes, Meteoritic Composition, Radioactive Age Determination, Solar System, Abundance, Chondrule, Inclusions, Thorium, Uranium Isotopes

Scientific paper

Variations of the U-238/U-235 ratio in the Allende meteorite, ranging from -35% to +19% are interpreted as evidence of live Cm-247 in the early solar system. The amounts of these and other r-products in the solar system indicate values of (9000 + or - 3000) million years for the age of the Galaxy and approximately 8 million years for the time between the end of nucleosynthesis and the formation of meteoritic grains. Three possible explanations are presented for the different values of the latter time period which are indicated by the decay of products of Cm-247, Al-27, Pu-244, and I-129.

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