Isotopic anomalies from neutron reactions during explosive carbon burning | Zendy

T. Lee | Zendy; David N. Schramm | Zendy; J. P. Wefel | Zendy; J. B. Blake | Zendy

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Isotopic anomalies from neutron reactions during explosive carbon burning

Author(s) -

T. Lee,

David N. Schramm,

J. P. Wefel,

J. B. Blake

Publication year - 1979

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/157346

Subject(s) - nucleosynthesis , physics , meteorite , chondrite , isotope , nuclear reaction , formation and evolution of the solar system , astrophysics , nuclear physics , astrobiology

[[abstract]]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.[[fileno]]2010507010048[[department]]天文

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