Barium isotopes in Allende meteorite - Evidence against an extinct superheavy element

Details Barium isotopes in Allende meteorite - Evidence against an extinct superheavy element Barium isotopes in Allende meteorite - Evidence against an extinct superheavy element

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983sci...222.1013l&link_type=abstract

Science (ISSN 0036-8075), vol. 222, Dec. 2, 1983, p. 1013-1015.

Computer Science

21

Barium Isotopes, Heavy Elements, Meteoritic Composition, Carbonaceous Chondrites, Nuclear Fission, Xenon Isotopes, Meteorites, Allende, Isotopes, Barium, Extinction, Anomalies, Carbon, Samples, Meteorite, Chromite, Xenon, Formation, Hypotheses, Fission, Nucleosysnthesis, Data, Abundance, Models, Procedure, Experiments

Scientific paper

Carbon and chromite fractions from the Allende meteorite that contain isotopically anomalous xenon-131 to xenon-136 (carbonaceous chondrite fission or CCF xenon) at up to 5×1011 atoms per gram show no detectable isotopic anomalies in barium-130 to barium-138. This rules out the possibility that the CCF xenon was formed by in situ fission of an extinct superheavy element. Apparently the CCF xenon and its carbonaceous carrier are relics from stellar nucleosynthesis.

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