Measurement of Thermal Neutron Cross Section and Resonance Integral of the Reaction ^<99>Tc(n, γ)^<100>Tc
Access this Article
Search this Article
To obtain fundamental data for research on the transmutation of nuclear waste, the thermal neutron cross section and the resonance integral of the reaction <SUP>99</SUP>Tc(n, γ)<SUP>100</SUP>Tc have been measured using an activation method.<BR>Four ammonium pertechnetate targets containing 371375 kBq of <SUP>99</SUP>Tc were irradiated for 2min with reactor neutrons. Activation detectors of Co/Al and Au/Al alloy wires were irradiated for 10min to monitor the neutron flux and the fraction of the epithermal part (Westcott' sepithermal index). The Tc samples and flux monitors were irradiated with and without a Cd capsule. The γ-ray spectra from the irradiated samples were measured using a high purity Ge detector.<BR>The thermal neutron cross section (2, 200m/s neutron cross section) and the resonance integral of the <SUP>99</SUP>Tc(n, γ)<SUP>100</SUP>Tc reaction were found to be 22.9±1.3b and 398±38b, respectively.<BR>The thermal neutron cross section obtained agrees with the previously reported values (20±2b by Lucas, 24.8 by Pattenden, 24±4 by Ovechkin) within the limits of error. On the other hand, the resonance integral is twice the value reported by Lucas (186±16b).
- Journal of Nuclear Science and Technology
Journal of Nuclear Science and Technology 32(5), 395-403, 1995-05-25
Atomic Energy Society of Japan