Calculations of the Neutron Age in Water and Heavy Water for D-D Sources

Calculations of the age to indium resonance of neutrons from the reaction D(d, n)He³ in water and heavy water have been performed by the Monte Carlo method. The calculations were designed to simulate the experiments of Spiegel et al. The effect of the duct used to lead the deuteron beam into the medium was investigated. The computations show agreement with the experimental results and with a similar calculation performed by Mullin.