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

Journal Article · Fri Dec 02 00:00:00 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), Vol. 222
• Country of Publication: United States
• Language: English

Related Subjects

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