Nuclear properties of Tungsten under 14 MeV neutron irradiation for fusion-fission hybrid reactors

摘要

Monte-Carlo simulations were performed to study the behavior of Tungsten under 14 MeV neutron irradiation. At this energy, its multiplicative properties become relevant, especially due to the (n, 2n) channel, but many other reactions are also present and a transmutation cycle can be drawn, showing the accumulation of metallic byproducts like Rhodium and Osmium. Also, a three-layer model was used to describe the interfaces within a schematic hybrid fusion-fission reactor to simulate the neutron transmission and reflection, showing that Tungsten can be a very useful material for a fission-breeding interface. (C) 2020 Elsevier Ltd. All rights reserved.