{sup 57}Co(n,{gamma}){sup 58}Co reaction cross section: Thermal and resonance integral measurements and energy dependence

Journal Article · Thu Jul 01 00:00:00 EDT 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.014602· OSTI ID:20695596

Maidana, Nora L; Mesa, Joel; Vanin, Vito R; Castro, Ruy M; Dias, Mauro S; Koskinas, Marina F ^[1]

---

1. Laboratorio do Acelerador Linear, Instituto de Fisica, Universidade de Sao Paulo, Travessa R 187, Cidade Universitaria, CEP: 05508-900 Sao Paulo, SP (Brazil)

The {sup 57}Co(n,{gamma}){sup 58}Co thermal and resonance integral cross section were measured as 51(5) b and 20.0(19) b, respectively, by irradiating aliquots of {sup 57}Co 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.

• OSTI ID: 20695596
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 70, Issue 1; Other Information: DOI: 10.1103/PhysRevC.70.014602; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BREIT-WIGNER FORMULA
CAPTURE
COBALT 57 TARGET
COBALT 58
CROSS SECTIONS
ENERGY DEPENDENCE
ENERGY-LEVEL TRANSITIONS
GAMMA RADIATION
HIGH-PURITY GE DETECTORS
NEUTRON FLUX
NEUTRON REACTIONS
NEUTRON TEMPERATURE
NEUTRONS
RESONANCE
RESONANCE INTEGRALS
STATISTICAL MODELS