| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Hakola, Antti
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Deuterium and helium retention in W and W-Ta coatings irradiated with energetic ion beamscitations
- 2021LIBS applicability for investigation of re-deposition and fuel retention in tungsten coatings exposed to pure and nitrogen-mixed deuterium plasmas of Magnum-PSIcitations
- 2021LIBS applicability for investigation of re-deposition and fuel retention in tungsten coatings exposed to pure and nitrogen-mixed deuterium plasmas of Magnum-PSIcitations
- 2021Influence of surface roughness on the sputter yield of Mo under keV D ion irradiationcitations
- 2020Impact of H-mode plasma operation on predamaged tungsten divertor tiles in ASDEX Upgradecitations
- 2020Impact of H-mode plasma operation on predamaged tungsten divertor tiles in ASDEX Upgradecitations
- 2019Influence of surface roughness on sputtering of Mo under keV D ions irradiation
- 2019Influence of surface roughness on sputtering of Mo under keV D ions irradiation
- 2018Production of ITER-relevant Be-containing laboratory samples for fuel retention investigations
- 2017Interaction of candidate plasma facing materials with tokamak plasma in COMPASScitations
- 2016Thermo-mechanical properties of W/Mo markers coatings deposited on bulk Wcitations
- 2016Thermo-mechanical properties of W/Mo markers coatings deposited on bulk Wcitations
- 2014First results and surface analysis strategy for plasma-facing components after JET operation with the ITER-like wallcitations
- 2012Pulsed laser deposition using diffractively shaped excimer-laser beamscitations
- 2010First Mirrors Test in JET for ITERcitations
- 2006Thin-film deposition using laser ablation : application to ferromagnetic shape-memory materials and methods for spatial shaping of laser beams
Places of action
| Organizations | Location | People |
|---|
article
Impact of H-mode plasma operation on predamaged tungsten divertor tiles in ASDEX Upgrade
Abstract
The effect of continued plasma exposure on two divertor target tiles intentionally damaged before installation was studied for ASDEX Upgrade H-mode discharge conditions. On one tile, made of molybdenum alloy (TZM), superficial melt damage was created in the GLADIS high heat flux test facility. To measure the influence of the resulting surface corrugations on erosion, the tile surface was subsequently covered with a 20 nm tungsten marker layer. A second tile, made of tungsten, was pre-damaged by exposure to 2 × 10<sup>5</sup> consecutive ELM-like heat pulses in the electron beam test facility JUDITH, which resulted in formation of an extended crack network. Both tiles were placed at the outer divertor target of ASDEX Upgrade using the DIM-II divertor manipulator and exposed to a series of 15 identical H-mode discharges. The surface state of both tiles was documented pre- and post-exposure using electron scanning microscopy. SEM analysis of the crack network's microscopic structure did not reveal any additional damage created by plasma exposure but showed deposition of migrated wall materials inside shadowed areas. The erosion pattern of the W-marker layer revealed regions of net erosion as well as of net deposition in the corrugated melt zone. Net erosion up to complete removal of the W marker layer was found at elevated parts of the surface oriented towards the incident plasma flux whereas net deposition was found in corresponding shadowed areas. In contrast, the undamaged surface parts showed a uniform erosion pattern determined by incident plasma ion flux and temperature.