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Long-term fuel retention in JET ITER-like wall
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2016 (English)In: Physica Scripta, Institute of Physics Publishing (IOPP), 2016, no T167Conference paper (Refereed)Text
Abstract [en]

Post-mortem studies with ion beam analysis, thermal desorption, and secondary ion mass spectrometry have been applied for investigating the long-term fuel retention in the JET ITERlike wall components. The retention takes place via implantation and co-deposition, and the highest retention values were found to correlate with the thickness of the deposited impurity layers. From the total amount of retained D fuel over half was detected in the divertor region. The majority of the retained D is on the top surface of the inner divertor, whereas the least retention was measured in the main chamber on the mid-plane of the inner wall limiter. The recessed areas of the inner wall showed significant contribution to the main chamber total retention. Thermal desorption spectroscopy analysis revealed the energetic T from DD reactions being implanted in the divertor. The total T inventory was assessed to be >0.3 mg.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. no T167
Keyword [en]
deposition, fuel retention, fusion energy, ion beam analysis, TDS, Desorption, Ion beams, Ions, Mass spectrometry, Secondary ion mass spectrometry, Thermal desorption, Thermal desorption spectroscopy, Co deposition, Divertor region, Inner walls, Post mortem studies, Top surface, Fuels
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-188325DOI: 10.1088/0031-8949/T167/1/014075ScopusID: 2-s2.0-84959902947OAI: oai:DiVA.org:kth-188325DiVA: diva2:936242
Conference
15th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2015, 18 May 2015 through 22 May 2015
Note

QC 20160613

Available from: 2016-06-13 Created: 2016-06-09 Last updated: 2016-06-13Bibliographically approved

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Publisher's full textScopushttp://irfm.cea.fr/pfmc15/

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Petersson, Per
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Fusion Plasma Physics
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