S-process krypton of variable isotopic composition in the Murchison meteorite

Details S-process krypton of variable isotopic composition in the Murchison meteorite S-process krypton of variable isotopic composition in the Murchison meteorite

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.332..700o&link_type=abstract

Nature (ISSN 0028-0836), vol. 332, April 21, 1988, p. 700-702. Research supported by the Korea Science and Engineering Foundatio

Astronomy and Astrophysics

Astrophysics

33

Krypton Isotopes, Meteoritic Composition, Murchison Meteorite, Xenon Isotopes, High Temperature Environments, Solar System, Meteorites, Murchison, Stony Meteorites, Cm2 Chondrites, Krypton, Xenon, Samples, Meteorite, Isotopes, Composition, Carbonaceous Chondrites, Spectra, Laboratory Studies, Experiments, Formation, Origin, Procedure, Parameters, Temperature, Isotopic Ratios, Residue

Scientific paper

Data are reported which, for the first time, permit the derivation of the full isotopic spectrum of s-process krypton with reasonable precision. It is shown that this s-Kr in a residue from the Murchison meteorite did not originate in one single s-process but rather is a mixture of contributions from stellar environments where the density of free neutrons was not the same. The astrophysical conditions under which this krypton was produced were distinct from those that have been invoked to explain the solar system s-process abundance. Similar to the C-13-rich carbon component in an aliquot of the same residue, the s-process Kr from different astrophysical sites has retained its identity during the accumulation and subsequent history of the meteorite.

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