Journal articles
Tritium retention in W plasma-facing materials: Impact of the material structure and helium irradiation
E. Bernard
1
R. Sakamoto
2
E. Hodille
3
A. Kreter
4
E. Autissier
5
M.-F. Barthe
5
P. Desgardin
5
T. Schwarz-Selinger
6
V. Burwitz
6
S. Feuillastre
7
S. Garcia-Argote
G. Pieters
8
B. Rousseau
9
M. Ialovega
10
R. Bisson
11
F. Ghiorghiu
11
C. Corr
12
M. Thompson
12
R. Doerner
13
S. Markelj
14
H. Yamada
15
N. Yoshida
16
C. Grisolia
10
E. Autissier 5
Author
M.-F. Barthe 5
Author IdHAL : marie-france-barthe ResearcherId : http://www.researcherid.com/rid/C-6751-2008 ORCID : https://orcid.org/0000-0002-0170-9498
P. Desgardin 5
Author IdHAL : pierre-desgardin ORCID : https://orcid.org/0000-0001-6563-2728
T. Schwarz-Selinger 6
Author
B. Rousseau 9
Author
M. Ialovega 10
Author
R. Bisson 11
Author IdHAL : regis-bisson ResearcherId : http://www.researcherid.com/rid/A-9195-2008 ORCID : https://orcid.org/0000-0002-8819-1563
F. Ghiorghiu 11
Author
1
ST-CROLLES - STMicroelectronics [Crolles] (850 rue Jean Monnet BP 16 38926 Crolles - France)
2
NIFS - National Institute for Fusion Science (322-6, Oroshi-cho, Toki, 509-5292 - Japan)
3
University of Helsinki (Yliopistonkatu 4, 00100 Helsinki - Finland)
4
Forschungszentrum Jülich GmbH (Wilhelm-Johnen-Straße, 52428 Jülich - Germany)
5
CEMHTI - Conditions Extrêmes et Matériaux : Haute Température et Irradiation (Site Cyclotron, CS 30058, 3A rue de la Férolerie, 45071 Orléans Cedex 2
Site Haute Température, CS 90055, 1D avenue de la Recherche Scientifique, 45071 Orléans Cedex 2 - France)
- UO - Université d'Orléans : UPR 3079 (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- CNRS - Centre National de la Recherche Scientifique : UPR 3079 (France)
6
IPP - Max-Planck-Institut für Plasmaphysik [Garching] (Boltzmannstraße 2 D-85748 Garching - Germany)
7
ICBMS - Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS UMR 5246 CNRS, Université de Lyon, Université Lyon 1, CNRS, INSA Lyon, CPE Lyon, bâtiment Lederer, 1 rue Victor Grignard, 69622 Villeurbanne Cedex, France - France)
- UCBL - Université Claude Bernard Lyon 1 (43, boulevard du 11 novembre 1918, 69622 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- INSA Lyon - Institut National des Sciences Appliquées de Lyon (20 Avenue Albert Einstein,
69621 Villeurbanne cedex - France)
- Université de Lyon (92 rue Pasteur - CS 30122, 69361 Lyon Cedex 07 - France)
- INSA - Institut National des Sciences Appliquées (France)
- École Supérieure Chimie Physique Électronique de Lyon (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5246 (France)
8
CEA - Commissariat à l'énergie atomique et aux énergies alternatives (Centre de Saclay
Centre de Grenoble
Centre de Cadarache
etc - France)
9
III-V Lab - Alcatel-Thalès III-V lab (Route de Nozay, 91461 Marcoussis Cedex - France)
10
IRFM - Institut de Recherche sur la Fusion par confinement Magnétique (CEA Cadarache, 13108 Saint-Paul-lèz-Durance - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DSM/IRFM (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
11
PIIM - Physique des interactions ioniques et moléculaires (Campus de Saint-Jérôme
Aile 3, Service 322
Avenue Escadrille Normandie-Niémen
13397 Marseille cedex 20 - France)
- AMU - Aix Marseille Université : UMR7345 / UMR6633 / URA773 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7345 / UMR6633 / URA773 (France)
12
University of Canberra (Australia)
13
UC San Diego - University of California [San Diego] (9500 Gilman Dr., La Jolla, CA 92093 USA - United States)
- University of California (United States)
14
IJS - Jozef Stefan Institute [Ljubljana] (Jamova cesta 39, 1000 Ljubljana Slovenia - Slovenia)
15
NIFS - Nastional Institute for Fusion Science (Oroshi 322-6, Toki, Gifu 509-5292 - Japan)
- NIFS (France)
16
Kyushu University [Fukuoka] (744 Motooka Nishi-ku
Fukuoka 819-0395 - Japan)
Abstract : Plasma-facing materials for next generation fusion devices, like ITER and DEMO, will be submitted to intense fluxes of light elements, notably He and H isotopes (HI). Our study focuses on tritium (T) retention on a wide range of W samples: first, different types of W materials were investigated to distinguish the impact of the pristine original structure on the retention, from W-coated samples to ITER-grade pure W samples submitted to various annealing and manufacturing procedures, along with monocrystalline W for reference. Then, He and He-D irradiated W samples were studied to investigate the impact on He-damages such as nano-bubbles (exposures in LHD or PSI-2) on T retention. We exposed all the samples to tritium gas-loading using a gentle technique preventing any introduction of new damage in the material. Tritium desorption is measured by Liquid Scintillation counting (LSC) at ambient and high temperatures (800 °C). The remaining T inventory is then measured by sample full dissolution and LSC. Results on T inventory on He exposed samples highlighted that in all cases, tritium desorption as a gas (HT) increases significantly due to the formation of He damages. Up to 1.8 times more T can be trapped in the material through a competition of various mechanisms, but the major part of the inventory desorbs at room temperature, and so will most likely not take part to the long-term trapped inventory for safety and operational perspectives. Unfortunately, investigation of "as received" industrial W (used for the making of plasma-facing materials) highlighted a strong impact of the pre existing defects on T retention: up to 2.5 times more T is trapped in "as received W" compared to annealed and polish W, and desorbs only at 800 °C, meaning ideal W material studies may underestimate T inventory for tokamak relevant conditions.
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Journal articles
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https://hal-amu.archives-ouvertes.fr/hal-02086134
Contributor : Régis Bisson Connect in order to contact the contributor
Submitted on : Monday, April 1, 2019 - 10:52:26 AM
Last modification on : Wednesday, October 13, 2021 - 3:06:28 AM
Long-term archiving on: : Tuesday, July 2, 2019 - 1:23:52 PM
Contributor : Régis Bisson Connect in order to contact the contributor
Submitted on : Monday, April 1, 2019 - 10:52:26 AM
Last modification on : Wednesday, October 13, 2021 - 3:06:28 AM
Long-term archiving on: : Tuesday, July 2, 2019 - 1:23:52 PM
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Bernard et al. - 2019 - Tritiu...
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- HAL Id : hal-02086134, version 1
- DOI : 10.1016/j.nme.2019.03.005
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E. Bernard, R. Sakamoto, E. Hodille, A. Kreter, E. Autissier, et al.. Tritium retention in W plasma-facing materials: Impact of the material structure and helium irradiation. Nuclear Materials and Energy, Elsevier, 2019, 19, pp.403-410. ⟨10.1016/j.nme.2019.03.005⟩. ⟨hal-02086134⟩
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