Abstract
view Abstract Citations (41) References (20) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Presence of 146Sm in the Early Solar System and Implications for Its Nucleosynthesis Prinzhofer, A. ; Papanastassiou, D. A. ; Wasserburg, G. J. Abstract A correlation of Nd-142/Nd-144 with Sm-144/Nd-144 in two meteorites which have a large range in Sm-144/Nd-144 in their constituent mineral phases is presented as evidence for the presence of the p-process nucleus Sm-146 in the early solar system and its alpha-decay into Nd-142. The ratio Sm-146/Sm-144 is estimated to be about 0.015 at the time of solar system formation, 4.56 AE ago. It is suggested that the abundance of Sm-146 is compatible with p-proc ess production rate estimates, but not with the production rate for Sm-146 based on a photodisintegration model for the production of p-process nuclides. Publication: The Astrophysical Journal Pub Date: September 1989 DOI: 10.1086/185536 Bibcode: 1989ApJ...344L..81P Keywords: Cosmochemistry; Nuclear Astrophysics; Nuclear Fusion; Samarium Isotopes; Solar System; Abundance; Mass Spectroscopy; Meteoritic Composition; Neodymium Isotopes; Radioactive Decay; SOLAR SYSTEM; SAMARIUM 146; DECAY; METEORITES; ISOTOPIC RATIOS; ABUNDANCE; NUCLEOSYNTHESIS; NEODYMIUM 144; PRODUCTION RATE; SAMPLES; METEORITE; LABORATORY STUDIES; IBITIRA; MORRISTOWN; ISOTOPES; PROCEDURE; Astrophysics; Planets; ABUNDANCES; METEORS AND METEORITES; NUCLEOSYNTHESIS full text sources ADS |
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