Measurement of the 18O(n, γ)19O Reaction Cross Sections by Prompt γ-RAY Detection Methods at Thermal and keV Energies

Details Measurement of the 18O(n, γ)19O Reaction Cross Sections by Prompt γ-RAY Detection Methods at Thermal and keV Energies Measurement of the 18O(n, γ)19O Reaction Cross Sections by Prompt γ-RAY Detection Methods at Thermal and keV Energies

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cgrs.conf..364o&link_type=abstract

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS. Proceedings of the Eleventh International Symposium. Held 2-6 September 2002

Physics

Scientific paper

The 18O(n, γ)19O reaction cross section, which is important for studies on the nucleosyntheses in the non-standard inhomogeneous big-bang model and the s process in cool giant stars, was measured by prompt γ-ray detection methods at thermal and keV energies. In the measurement at thermal energy, ten primary and secondary γ-ray transitions were identified and the total capture cross section was obtained as 156 ± 16 μb, assuming a new 19O neutron separation energy of 3.964 MeV. In the measurement at keV energies, three primary transitions were observed and the total capture cross sections were obtained as 8.5 ± 1.7 and 11.9 ± 1.8 μb at 42 and 65 keV, respectively.

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