首页|Implantation and desorption of H isotopes in W revisited by object kinetic Monte Carlo simulation
Implantation and desorption of H isotopes in W revisited by object kinetic Monte Carlo simulation
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NSTL
Elsevier
As the leading candidate of plasma-facing materials, tungsten is expected to withstand the influx of D-T plasma in future fusion reactors, which is known to cause damages to tungsten surface and give rise to T fuel retention. In this work, based on accurate density functional theory parameterization, we carried out a series of object kinetic Monte Carlo (OKMC) simulations to study the retention behavior of H isotopes in W. By directly comparing our simulations with existing experiments, we show that the OKMC model can accurately describe H implantation and desorption behavior in W, with excellent agreements found between experimental/simulated H annealing curves, thermal desorption spectra, and fluence dependence. Our OKMC model reveals primary trapping sites of H in these experiments, provides deeper understanding for experimental results, and offers quantitative theoretical assessment for H implantation and desorption in W.(c) 2022 Elsevier B.V. All rights reserved.
H retentionTungstenObject kinetic monte carlo (OKMC)SimulationsIrradiationDEUTERIUM RETENTIONTUNGSTENHYDROGENMIGRATIONHELIUMALLOYSENERGY
Wang, Panpan、Cao, Qilong、Kong, Xiang-Shan、Chen, L.、Xie, Z. M.、Hou, Jie
NSTL
Elsevier
