Neutron-capture cross sections for N = 28 magic-shell nuclei.

Details Neutron-capture cross sections for N = 28 magic-shell nuclei. Neutron-capture cross sections for N = 28 magic-shell nuclei.

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993nuas.symp..143w&link_type=abstract

"Nuclear Astrophysics, Proceedings of the 7th Workshop held 22-27 March 1993 at Ringberg Castle, Tegernsee,

Astronomy and Astrophysics

Astrophysics

Nuclear Reactions, Nucleosynthesis: Stellar Interiors

Scientific paper

The explanation of elemental and isotopic Ca-Ti-Cr abundance anomalies in certain primitive meteorites involves still unsolved problems. Major deficiencies in earlier model calculations arose from the fact that inadequate nuclear-physics model parameters, e.g. for β-decay half-lives and neutron-capture cross sections, were used for neutron-rich magic-shell isotopes. The authors have recalculated the neutron-capture cross sections in the region of the N = 28 "key" isotopes by replacing the statistical model by the Breit-Wigner resonance formalism and by taking into account the direct-capture contributions.

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