A. De Backer

A multi-objective optimization to characterize the diffusion of nanocavities in tungsten

A. De Backer, A. Souidi, E.A. Hodille, Emmanuel Autissier et autres

We characterize the diffusion properties of nanocavities and their uncertainties by designing a multi-objective optimization approach. In this work, the nanocavity diffusion on the 0.3–4 nm size range is the input of a multi-scale simulation that is adjusted to reproduce experimental results …

fr, Algérie (code pays fourni par la source)

Multi-Objective Optimization of the Nanocavities Diffusion in Irradiated Metals

A. De Backer, A. Souidi, E.A. Hodille, Emmanuel Autissier et autres

Materials in fission reactors or fusion tokamaks are exposed to neutron irradiation, which creates defects in the microstructure. With time, depending on the temperature, defects diffuse and form, among others, nanocavities, altering the material performance. The goal of this work is to …

fr, Algérie (code pays fourni par la source)

Comparative study of deuterium retention and vacancy content of self-ion irradiated tungsten

A. Hollingsworth, M.F. Barthe, M. Yu. Lavrentiev, P. M. Derlet et autres

Self-ion irradiation of pure tungsten with 2 MeV W ions provides a way of simulating microstructures generated by neutron irradiation in tungsten components of a fusion reactor. Transmission electron microscopy (TEM) has been used to characterize defects formed in tungsten samples by …

gb, fr, ch, at, fi, il, cn, ro (code pays fourni par la source)

Modelling of hydrogen isotopes trapping, diffusion and permeation in divertor monoblocks under ITER-like conditions

E.A. Hodille, Rémi Delaporte-Mathurin, J. Denis, M. Pečovnik et autres

In this work, the deuterium (D) retention in plasma facing components of the divertor of ITER is estimated. Three scenarios are simulated with 3 different surface temperatures, 1456 K, 870 K and 435 K. They represent the exposure of different parts of …

fr, si, jp (code pays fourni par la source)

Comparative study of deuterium retention in irradiated Eurofer and Fe–Cr from a new ion implantation materials facility

A. Hollingsworth, M. Yu. Lavrentiev, Rebecca J. Watkins, A. Davies et autres

Comparative study of deuterium retention in irradiated Eurofer and Fe–Cr from a new ion implantation materials facility, Hollingsworth, A., Lavrentiev, M.Yu., Watkins, R., Davies, A.C., Davies, S., Smith, R., Mason, D.R., Baron-Wiechec, A., Kollo, Z., Hess, J., Jepu, I., Likonen, J., Heinola, …

gb, il, cn, ro, fr, fi, de (code pays fourni par la source)

The influence of carbon impurities on the formation of loops in tungsten irradiated with self-ions

N. Castin, A. Dubinko, G. Bonny, A. Bakaev et autres

be, fi, gb (code pays fourni par la source)

Modeling Zirconium Hydrides Reorientation under Applied Load

Lanting Zhang, Ludovic Thuinet, Alexandre Legris, A. De Backer et autres

Investigation of deuterium trapping and release in the JET divertor during the third ILW campaign using TDS

J. Likonen, K. Heinola, A. De Backer, A. Baron-Wiecheć et autres

Selected set of samples from JET ITER-Like Wall (JET-ILW) divertor tiles exposed in 2015–2016 has been analysed using Thermal Desorption Spectrometry (TDS). The deuterium (D) amounts obtained with TDS were compared with Nuclear Reaction Analysis (NRA). The highest amount of D was …

gb, fi, pt, ro (code pays fourni par la source)

Investigation of deuterium trapping and release in the JET ITER-like wall divertor using TDS and TMAP

J. Likonen, K. Heinola, A. De Backer, A. Baron-Wiecheć et autres

Selected set of samples from JET ITER-Like Wall (JET-ILW) divertor tiles exposed both in 2013–2014 and 2011–2014 has been analysed using Thermal Desorption Spectrometry (TDS). The deuterium (D) amounts obtained with TDS were compared with Ion Beam Analysis (IBA) and Secondary Ion …

fi, gb, pt, ro, de, ru (code pays fourni par la source)

A model of defect cluster creation in fragmented cascades in metals based on morphological analysis

A. De Backer, Christophe Domain, Charlotte Becquart, Laurence Lunéville et autres

The impacts of ions and neutrons in metals cause cascades of atomic collisions that expand and shrink, leaving microstructure defect debris, i.e. interstitial or vacancy clusters or loops of different sizes. In De Backer et al (2016 Europhys. Lett. 115 26001), we …

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Hydrogen accumulation around dislocation loops and edge dislocations: from atomistic to mesoscopic scales in BCC tungsten

A. De Backer, Daniel R. Mason, Christophe Domain, D. Nguyen-Manh et autres

In a fusion tokamak, the plasma interacts with the metallic wall and the divertor. Hydrogen isotopes penetrate and diffuse into the material and interact with defects where they are trapped. Neutrons produced by the fusion reactions in the plasma are stopped in …

gb, fr (code pays fourni par la source)

Multiscale modelling of the interaction of hydrogen with interstitial defects and dislocations in BCC tungsten

A. De Backer, Daniel R. Mason, Christophe Domain, D. Nguyen-Manh et autres

In a fusion tokamak, the plasma of hydrogen isotopes is in contact with tungsten at the surface of a divertor.In the bulk of the material, the hydrogen concentration profile tends towards dynamic equilibrium between the flux of incident ions and their trapping …

gb, fr (code pays fourni par la source)