Benchmarking fission rate simulations through comparison with neutron activation data

Detta är en L3-uppsats från Uppsala universitet/Tillämpad kärnfysik

Författare: Karlsson Peter; [2020]

Nyckelord: Neutron activation; Gamma spectroscopy; Fission;

Sammanfattning: Metal foils were implemented in a measurement of neutron-induced fission at the IGISOL facility in 2016. These foils were activated by a neutron flux during the experiment and measured after the beam was turned off. The radioactive products from the neutron activation were identified in an analysis of γ-ray spectroscopy data. The results were then used to benchmark the neutron flux simulated by MCNPX, which is used for a simulation model of an ion guide that was implemented in the experiment in 2016. The predicted number of neutron activation products were calculated using the simulated neutron flux and compared to results from the experiment. This comparison benchmarked the neutron flux and showed a consistency with the results from a previous study. This is a step in the process to validate the predictive power of the simulation model which is developed for the study of neutron-induced fission.

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