kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Deep deuterium retention and Be/W mixing at tungsten coated surfaces in the JET divertor
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.ORCID iD: 0000-0001-7741-3370
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.ORCID iD: 0000-0003-2983-3463
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.ORCID iD: 0000-0002-9812-9296
Show others and affiliations
2016 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T167, article id 014061Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

Surface samples from a full poloidal set of divertor tiles exposed in JET through operations 2010-2012 with ITER-like wall have been investigated using SEM, SIMS, ICP-AES analysis and micro beam nuclear reaction analysis (μ-NRA). Deposition of Be and retention of D is microscopically inhomogeneous. With careful overlaying of μ-NRA elemental maps with SEM images, it is possible to separate surface roughness effects from depth profiles at microscopically flat surface regions, without pits. With (3He, p) μ-NRA at 3-5 MeV beam energy the accessible depth for D analysis in W is about 9 μm, sufficient to access the W/Mo and Mo/W interfaces in the coatings and beyond, while for Be in W it is about 6 μm. In these conditions, at all plasma wetted surfaces, D was found throughout the whole accessible depth at concentrations in the range 0.2-0.7 at% in W. Deuterium was found to be preferentially trapped at the W/Mo and Mo/W interfaces. Comparison is made with SIMS profiling, which also shows significant D trapping at the W/Mo interface. Mixing of Be and W occurs mainly in deposited layers.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2016. Vol. T167, article id 014061
Keywords [en]
beryllium, deuterium, ion beam analysis, materials migration, Atomic emission spectroscopy, Ion beams, Mixing, Nuclear reactions, Surface roughness, Coated surface, Deposited layer, Deuterium retention, Nuclear reaction analysis, Surface roughness effects, Surface sample, Wetted surface, Fighter aircraft
National Category
Fusion, Plasma and Space Physics Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:kth:diva-188322DOI: 10.1088/0031-8949/T167/1/014061ISI: 000383504700062Scopus ID: 2-s2.0-84959887762OAI: oai:DiVA.org:kth-188322DiVA, id: diva2:936256
Conference
15th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2015, Aix-en-Provence, France, 18 May 2015 through 22 May 2015
Note

QC 20161024

Available from: 2016-06-13 Created: 2016-06-09 Last updated: 2024-03-15Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopusConference Homepage

Authority records

Bergsåker, B. Henric M.Bykov, IgorZhou, YushanPetersson, Per

Search in DiVA

By author/editor
Bergsåker, B. Henric M.Bykov, IgorZhou, YushanPetersson, Per
By organisation
Fusion Plasma Physics
In the same journal
Physica Scripta
Fusion, Plasma and Space PhysicsManufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 429 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf