Influence of grain boundaries on the radiation-induced defects and hydrogen in nanostructured and coarse-grained tungsten

G Valles, M Panizo-Laiz, C González, I Martin-Bragado… - Acta Materialia, 2017 - Elsevier
We have studied the influence of grain boundaries (GBs) on the radiation-induced defect
evolution and on H retention at 300 K, both experimentally and by computer simulations. For …

Comparative study regarding the sputtering yield of nanocolumnar tungsten surfaces under irradiation

A Lopez-Cazalilla, C Cupak, M Fellinger… - Physical Review …, 2022 - APS
Nanostructured tungsten has been proposed as a promising option for plasma facing
materials in future fusion reactors, because compared to conventional tungsten it shows …

Hydrogen diffusion and trapping in nanocrystalline tungsten

PM Piaggi, EM Bringa, RC Pasianot, N Gordillo… - Journal of Nuclear …, 2015 - Elsevier
The hydrogen behavior in nanocrystalline W (ncW) samples with grain size of 5 and 10 nm
is studied using Molecular Dynamics (MD) with a bond order potential (BOP) for the W–H …

The influence of high grain boundary density on helium retention in tungsten

G Valles, C González, I Martin-Bragado… - Journal of Nuclear …, 2015 - Elsevier
In order to study the influence of a high grain boundary density on the amount, size and
distribution of defects produced by pulsed helium (625 keV) irradiation in tungsten, we have …

H trapping and mobility in nanostructured tungsten grain boundaries: a combined experimental and theoretical approach

C González, M Panizo-Laiz, N Gordillo… - Nuclear …, 2015 - iopscience.iop.org
The trapping and mobility of hydrogen in nanostructured tungsten grain boundaries (GBs)
have been studied by combining experimental and density functional theory (DFT) data …

Hydrogen accumulation in nanostructured as compared to the coarse-grained tungsten

R Gonzalez-Arrabal, M Panizo-Laiz, N Gordillo… - Journal of Nuclear …, 2014 - Elsevier
We report on the influence of sample microstructure and of irradiation conditions on the H
behaviour in Tungsten (W). For this purpose, commercial coarse grained (CGW) and …

Experimental and computational studies of the influence of grain boundaries and temperature on the radiation-induced damage and hydrogen behavior in tungsten

M Panizo-Laiz, P Díaz-Rodríguez, A Rivera… - Nuclear …, 2019 - iopscience.iop.org
We study the influence of grain boundaries (GBs) on radiation-induced vacancies, as well as
on the hydrogen (H) behavior in tungsten (W) samples with different grain sizes in the …

Sputter yield reduction and fluence stability of numerically optimized nanocolumnar tungsten surfaces

C Cupak, A Lopez-Cazalilla, H Biber, J Brötzner… - Physical Review …, 2023 - APS
Nanocolumnar tungsten surfaces were investigated with numerical techniques regarding
their potential to reduce sputtering by ion bombardment. We simulated a large number of …

[HTML][HTML] Coexistence of a self-interstitial atom with light impurities in a tungsten grain boundary

D Fernández-Pello, MA Cerdeira… - Journal of Nuclear …, 2022 - Elsevier
In this paper, we report on ab initio simulations results focused on completing a thorough
energetic, structural, charge and mobility analysis of the synergistic behaviour of diverse …

Fusion technology aspects of laser inertial fusion energy (LIFE)

WR Meier, AM Dunne, KJ Kramer, S Reyes… - Fusion Engineering and …, 2014 - Elsevier
This paper provides an overview of one option for LLNL's LIFE power plant design with a
focus on the fusion nuclear science and technology aspects. The design is based on 132 MJ …