Neutron capture cross section of {sup 15}N at stellar energies

Journal Article · Thu Feb 01 04:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.977· OSTI ID:278857

Meissner, J; Schatz, H; Herndl, H; Wiescher, M ^[1]; Beer, H; Kaeppeler, F ^[2]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2. Forschungszentrum Karlsruhe, Institut fuer Kernphysik III, P.O. Box 3640, D--76021 Karlsruhe (Germany)

The neutron capture rate on {sup 15}N may be of considerable importance for {ital s}-process nucleosynthesis in red giants as well as for the nucleosynthesis in inhomogeneous big bang scenarios. We measured the reaction cross section of {sup 15}N({ital n},{gamma}){sup 16}N at the Forschungszentrum Karlsruhe with a fast cyclic neutron activation technique at laboratory neutron energies of 25, 152, and 370 keV. Direct capture and shell model calculations were performed to interpret the results. The presented reaction rate is 30{endash}50{percent} smaller than the previously used theoretical rates. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 278857
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 53; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CAPTURE
CROSS SECTIONS
NEUTRON REACTIONS
NEUTRONS
NITROGEN 15
NUCLEOSYNTHESIS
S PROCESS
SHELL MODELS