Linear collision sequences in bcc iron and the effect of thermal vibrations

Relation between the interaction potential, replacement collision sequences, and collision cascade expansion in iron

“…3 A complementary work on the RCS mechanisms in bcc Fe and the influence of tem-perature can be found in another article. 13 This later study, which also grounds the BCA model on MD results, suggested that most linear collision sequences are short. Other BCA simulations showed that, probably, therefore, their length distributions and frequency of occurrence are not significantly temperature dependent.…”

Dependence of radiation damage accumulation in iron on underlying models of displacement cascades and subsequent defect migration

“…Moving atoms are ordered into time-slabs and those in the earliest slab are selected for the next collision until this slab is empty, and so on. Except in the case of replacement collisions to which a specific treatment is applied (see [25,26,36] for a discussion in the case of iron), target atoms are assumed bound to their lattice sites with an energy equal to the cohesive energy of iron. Such recoils are then identified as cascade atoms if their kinetic energy at the exit of their collisions is higher than a threshold value.…”

Molecular dynamics simulation of displacement cascades in α-Fe: A critical review

“…In addition, this review raises the question of trying to determine the origin of the differences in displacement cascade evolution simulated with different potentials. This question has been addressed in the recent past using BCA studies by Becquart, Hou and Souidi [66][67][68][69][70][71] and receives further attention in a companion paper proposed in these proceedings by Terentyev et al, where cascades simulated by MD using four different potentials for a-Fe and analysed in exactly the same way are compared [72]. Table 2 summarises the main features of the existing cascade databases considered in this review.…”