A UKAEA evaluation of displacement damage models for iron

Abstract Various damage models used within the UKAEA have been evaluated and compared in the context of fast reactor and accelerator irradiations for iron. The limitations of the Kinchin-Pease model are discussed in the light of our present understanding of the partition between elastic and inelastic energy loss within collision cascades. The individual collisions within the cascade are treated as a series of binary collisions and matched to dynamic collision models at low energy. It is recommended that the damage model based on the calculations of Norgett, Robinson and Torrens be used for the calculation of the number of atomic displacements produced during neutron or ion irradiation.