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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Heinola, Kalle
International Atomic Energy Agency
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Solubility of Hydrogen in a WMoTaNbV High-Entropy Alloycitations
- 2023Hydrogen isotope exchange experiments in high entropy alloy WMoTaNbVcitations
- 2022Irradiation Damage Independent Deuterium Retention in WMoTaNbVcitations
- 2020Comparative study of deuterium retention in irradiated Eurofer and Fe–Cr from a new ion implantation materials facilitycitations
- 2020Comparative study of deuterium retention in irradiated Eurofer and Fe-Cr from a new ion implantation materials facilitycitations
- 2018Production of ITER-relevant Be-containing laboratory samples for fuel retention investigations
- 2016Studies of Be migration in the JET tokamak using AMS with Be-10 markercitations
- 2015First dust study in JET with the ITER-like wallcitations
Places of action
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article
Studies of Be migration in the JET tokamak using AMS with Be-10 marker
Abstract
<p>The JET tokamak is operated with beryllium limiter tiles in the main chamber and tungsten coated carbon fiber composite tiles and solid W tiles in the divertor. One important issue is how wall materials are migrating during plasma operation. To study beryllium redistribution in the main chamber and in the divertor, a Be-10 enriched limiter tile was installed prior to plasma operations in 2011-2012. Methods to take surface samples have been developed, an abrasive method for bulk Be tiles in the main chamber, which permits reuse of the tiles, and leaching with hot HCl to remove all Be deposited at W coated surfaces in the divertor. Quantitative analysis of the total amount of Be in cm(2) sized samples was made with inductively coupled plasma atomic emission spectroscopy (ICP-AES). The Be-10/Be-9 ratio in the samples was measured with accelerator mass spectrometry (AMS). The experimental setup and methods are described in detail, including sample preparation, measures to eliminate contributions in AMS from the B-10 isobar, possible activation due to plasma generated neutrons and effects of diffusive isotope mixing. For the first time marker concentrations are measured in the divertor deposits. They are in the range 0.4-1.2% of the source concentration, with moderate poloidal variation. (C) 2015 Elsevier B.V. All rights reserved.</p>