Effects of surface vacancy-adatom pair formation on PFC tungsten surface morphological response

CS Chen, D Dasgupta, A Weerasinghe… - Nuclear …, 2023 - iopscience.iop.org
We report a simulation study of the effect of He-irradiation-induced surface vacancy-adatom
pair formation on the surface morphological evolution of plasma-facing component (PFC) …

Temperature-dependent model of helium bubble expansion and bursting in tungsten

BF Lee, KD Hammond - Journal of Nuclear Materials, 2021 - Elsevier
Continuum-scale models that can reliably predict the behavior of helium in tungsten are of
interest to the fusion community due to the projected impact of these materials on fusion …

Development of multi-scale computational frameworks to solve fusion materials science challenges

A Lasa, S Blondel, MA Cusentino, D Dasgupta… - Journal of Nuclear …, 2024 - Elsevier
Over the past two decades, the US-DOE has funded multiple projects that rely on high-
performance computing and exascale computing platforms to accelerate scientific …

[HTML][HTML] Hole formation effect on surface morphological response of plasma-facing tungsten

CS Chen, D Dasgupta, BD Wirth… - Journal of Applied …, 2021 - pubs.aip.org
We report simulation results on the effect of helium (He) bubble bursting-mediated surface
hole formation on the surface morphological response of tungsten plasma-facing …

Competitive barrier and trapping effects of helium bubbles on hydrogen isotopes migration behavior in tungsten

F Sun, DY Chen, QH Liu, JP Zhu, XC Li… - Journal of Nuclear …, 2024 - Elsevier
In fusion reactors, plasma-facing materials will be exposed to low-energy and high-flux
plasma of the hydrogen isotopes fuel, ie, deuterium (D) and tritium (T), along with helium …

Corrigendum and Addendum: Helium flux effects on bubble growth and surface morphology in plasma-facing tungsten from large-scale molecular dynamics …

KD Hammond, BF Lee, IV Naeger… - Nuclear …, 2020 - iopscience.iop.org
Two of the simulations discussed in a prior article (Hammond et al 2019 Nucl. Fusion 59
066035) were affected by a simulation glitch. We repeated the affected calculations and …

Modelling of physical sputtering properties during tungsten fuzz growth under various impact energies on NAGDIS-II

KR Yang, JY Chen, S Kajita, Q Shi, CR Zu, B Cui… - Journal of Nuclear …, 2024 - Elsevier
Fibre-like nanostructure named fuzz can form on tungsten (W) surface under the irradiation
of helium (He) plasma. While the W fuzz growth can be suppressed by the bombardment of …

Diffusion and incidence of helium on tungsten surface

J Wang, J Guo, B He, D Liu, XD Pan, XC Li… - Journal of Nuclear …, 2023 - Elsevier
In this study, we investigated the diffusion and incidence of helium on tungsten surfaces
using first principles and molecular dynamics methods. For three common tungsten surfaces …

[HTML][HTML] Delayed surface degradation in W-Ta alloys at 400° C under high-fluence 40 eV He plasma exposure

E Yildirim, PM Mummery, TW Morgan… - Fusion Engineering and …, 2023 - Elsevier
The surface modifications in W-xTa alloys (x= 0, 6, 11 wt.%), as potential material candidates
for tokamak components facing the fusion plasma, have been assessed at a temperature …

Possible approaches for simulating the formation of fuzz structure on tungsten surface under helium irradiation

J Wang, J Guo, YY Liu, W Shao, K Xu, L Sun… - Computational Materials …, 2024 - Elsevier
In this paper, we used the conventional method to simulate the helium irradiation on
tungsten (110) surface with irradiation energy of 30 eV at temperature of 1300 K. Traditional …