Neutron-capture nucleosynthesis of neodymium isotopes and the s-process from A = 130 to 150

Abstract

view Abstract Citations (21) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Neutron-capture nucleosynthesis of neodymium isotopes and the s-process from A = 130 to 150 Mathews, G. J. ; Kaeppeler, F. Abstract New measurements of neutron capture cross sections for Nd-142, 143, 144 are reported. These are combined with other recent measurements and applied to a detailed study of the s-process and r-process systematics for A = 130-150 nuclei. The influence of these results on the interpretation of isotopic anomalies observed in acid-insoluble residues and inclusions from the Allende meteorite is also examined. The uncertainties in the s-process sigma-N curve are significantly diminished in the present work, and a fit is obtained which is consistent with all of the s-process-only isotopes in this region. The new results tend to confirm the hypothesis that the isotopic anomalies in materials from the Allende meteorite are the result of an unusual mixture of average solar-system s-process and r-process material, but an odd-even effect may be present in the r-process anomalies of inclusion EK 1-4-1. Publication: The Astrophysical Journal Pub Date: November 1984 DOI: 10.1086/162657 Bibcode: 1984ApJ...286..810M Keywords: Meteoritic Composition; Neodymium Isotopes; Neutron Cross Sections; Nuclear Fusion; Abundance; Allende Meteorite; Inclusions; Lunar and Planetary Exploration full text sources ADS |