Carbynes - Carriers of primordial noble gases in meteorites

Details Carbynes - Carriers of primordial noble gases in meteorites Carbynes - Carriers of primordial noble gases in meteorites

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sci...209.1512w&link_type=abstract

Science, vol. 209, Sept. 26, 1980, p. 1512-1514.

Computer Science

16

Carbon, Carbonaceous Chondrites, Meteoritic Composition, Polyatomic Molecules, Rare Gases, Abundance, Allotropy, Electron Diffraction, Etching, Interplanetary Dust, Ion Beams, Stellar Evolution, Meteorites, Carbynes, Rare Gases, Diffraction, Allende Meteorite, Murchison Meteorite, Carbonaceous Chondrites, Carbon, Isotopes, Composition, Condensation, Origin, Solar Nebula, Dust, Anomalies, Nucleosynthesis, Data, Comparisons

Scientific paper

Five carbynes (triply bonded allotropes of carbon) have been found by electron diffraction in the Allende and Murchison carbonaceous chondrites: carbon VI, VIII, X, XI, and (tentatively) XII. From the isotopic composition of the associated noble-gas components, it appears that the carbynes in Allende (C3V chondrite) are local condensates from the solar nebula, whereas at least two carbynes in Murchison (C2 chondrite) are of exotic, presolar origin. They may be dust grains that condensed in stellar envelopes and trapped isotropically anomalous matter from stellar nucleosynthesis.

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