Microstructure evolution of irradiated tungsten: Crystal effects in He and H implantation as modelled in the Binary Collision Approximation

Recent progress in research on tungsten materials for nuclear fusion applications in Europe

“…The parameterization of the code is based on first principles calculations [69]. The implanted ions flux is modelled using cascade debris calculated by Marlowe (a code based on binary collision approximation) [71]. This work includes experimental investigations on the nanovoid formation using Positron Annihilation Spectroscopy [72] and the simulation conditions have been chosen to model these experiments.…”

Study of Point Defect Distributions in Tantalum

“…To remediate the situation, we used in Marlowe a recombination radius r V [26,45]. A Frenkel pair is considered to remain stable if the vacancy-interstitial separation distance is larger than r V , otherwise, it recombines.…”

“…The computer simulation based on BCA is widely employed to study the interactions of energetic particles with matter. It was successfully applied to backscattering, sputtering, and radiation damage [17,[21][22][23][24][25][26][27]. By using BCA calculations, we can cover a wide range of sufficiently high energies, (39) treat large numbers of damage events and therefore improve, drastically, cascade statistics [28].…”

Object kinetic Monte Carlo simulations of irradiated tungsten for nuclear fusion reactors

“…As a result, BCA turn out accurate enough to be used in OKMC simulation for light ion irradiation. In fact, this thesis in many cases is based on BCA cascades to simulate with OKMC He and H irradiation in W. Becquart et al [66] and Hou et al [146] have simulated with LAKIMOCA the thermal desorption of He-irradiated W at different energies (400 eV and 3 keV) and fluences (up to 12, 13 and 350 ppm). Their results have a good agreement with the experiments published by Soltan et al [112].…”

“…[66] was improved with new DFT data for binding energies of He atoms to vacancies and some other considerations described in Section 3.2. In addition, the same irradiation conditions were set [66,146] …”