Neutron capture cross section of {sup 18}O and its astrophysical implications
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
- Forschungszentrum Karlsruhe, Institut fuer Kernphysik III, P.O. Box 3640, D-76021 Karlsruhe (Germany)
The neutron capture rate on {sup 18}O is of considerable interest in the interpretation of nucleosynthesis in inhomogeneous big bang scenarios and for stellar helium burning in massive red giant stars as well as AGB stars. We measured the reaction cross section of {sup 18}O({ital n},{gamma}){sup 19}O at the Forschungszentrum Karlsruhe with a fast cyclic neutron activation technique at laboratory neutron energies of 25, 129, 152, 250, and 370 keV. Direct capture and shell model calculations were performed to interpret the results as well as previous unpublished data. Contributions to the reaction cross section and to the new stellar reaction rate will be discussed. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 277426
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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