Barium isotopes in Allende meteorite: evidence against an extinct superheavy element

Journal Article · Fri Dec 02 04:00:00 EST 1983 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.222.4627.1013· OSTI ID:5123847

Lewis, R S ^[1]; Anders, E; Shimamura, T; Lugmair, G W

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1. Univ. of Chicago, IL

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 x 10/sup 11/ 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.

• OSTI ID: 5123847
• Journal Information: Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 222; ISSN SCIEA
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALINE EARTH ISOTOPES
BARIUM 130
BARIUM 135
BARIUM 138
BARIUM ISOTOPES
CHONDRITES
DAYS LIVING RADIOISOTOPES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE RATIO
ISOTOPES
METEORITES
NUCLEAR REACTIONS
NUCLEI
NUCLEOSYNTHESIS
R PROCESS
RADIOISOTOPES
STABLE ISOTOPES
STAR EVOLUTION
STONE METEORITES
SYNTHESIS
XENON 131
XENON 134
XENON 136
XENON ISOTOPES