Physics
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004phrvc..70a4602m&link_type=abstract
Physical Review C, vol. 70, Issue 1, id. 014602
Physics
Neutron Absorption, Resonance Reactions, Hydrostatic Stellar Nucleosynthesis, 39<=A<=58
Scientific paper
The 57Co (n,γ) 58Co thermal and resonance integral cross section were measured as 51 (5) b and 20.0 (19) b , respectively, by irradiating aliquots of 57Co solution sealed inside quartz bottles near the core of the IEA-R1 IPEN research reactor and counting the gamma-ray residual activity. The irradiations were monitored using Au-Al alloy foils, with and without Cd cover. The gamma-ray measurements were performed with a shielded HPGe detector. Westcott formalism was applied for the average neutron flux determination. The cross section energy dependence was evaluated using the multilevel Breit-Wigner expression considering the first two resonances and the statistical model for energies above the second resonance. Maxwellian averaged neutron capture cross section with neutron temperatures between 5 and 100 keV were also evaluated.
Castro Ruy M.
Dias Mauro S.
Koskinas Marina F.
Maidana Nora L.
Mesa Joel
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