Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232..854l&link_type=abstract
Astrophysical Journal, Part 1, vol. 232, Sept. 15, 1979, p. 854-862. Research supported by the Aerospace Corp., R. R. McCormick
Astronomy and Astrophysics
Astrophysics
17
Abundance, Astrophysics, Carbonaceous Chondrites, Isotopes, Meteoritic Composition, Nuclear Fusion, Aluminum 26, Astronomical Models, Capture Effect, Cerium Isotopes, Iodine Isotopes, Neutrons, Oxygen Isotopes, Solar System
Scientific paper
The heavy isotopic anomalies observed recently in the fractionation and unknown nuclear inclusions from the Allende meteorite are explained by neutron reactions during the explosive carbon burning (ECB). This model produces heavy anomalies in the same zone where Al-26 and O-16 are produced, thus reducing the number of source zones required for the isotopic anomalies. Unlike the classical r-process, the ECB n-process avoids the problem with the Sr anomaly and may resolve the problem of conflicting time scales between Al-26 and the r-process isotopes I-129 and Pu-244. Experimental studies of Zr and Ce isotopic composition are proposed to test this model.
Bernard Blake J.
Lee Taegweon
Schramm David N.
Wefel John P.
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