Phys. Rev. Lett. 78, 2704–2707 (1997)New 142,144Nd (n,γ) Cross Sections and the s-process Origin of the Nd Anomalies in Presolar Meteoric Silicon Carbide GrainsReceived 15 January 1997; published in the issue dated 7 April 1997 We have made improved measurements of the 142,144Nd(n,γ) cross sections and investigated the s-process nucleosynthesis in the Ce-Nd-Sm region. Recently discovered anomalies of the Nd isotopes in silicon carbide grains from the Murchison meteorite have been interpreted in terms of pure s-process material from an AGB star. With previous cross section data the s-process origin could not be confirmed, whereas our new data convincingly support the interpretation that these isotopic anomalies were carried into the early solar system inside carbon dust particles that condensed in outflowing winds of presolar AGB stars. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.2704
DOI:
10.1103/PhysRevLett.78.2704
PACS:
25.40.Lw, 26.20.+f, 97.10.Cv, 97.10.Tk
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