Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Deep deuterium retention and Be/W mixing at tungsten coated surfaces in the JET divertor
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.ORCID-id: 0000-0003-2983-3463
KTH, Skolan för elektro- och systemteknik (EES), Fusionsplasmafysik. EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom.
Visa övriga samt affilieringar
2016 (Engelska)Ingår i: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T167, artikel-id 014061Artikel i tidskrift (Refereegranskat) Published
Resurstyp
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.

Ort, förlag, år, upplaga, sidor
Institute of Physics Publishing (IOPP), 2016. Vol. T167, artikel-id 014061
Nyckelord [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
Nationell ämneskategori
Fusion, plasma och rymdfysik Bearbetnings-, yt- och fogningsteknik
Identifikatorer
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
Konferens
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
Anmärkning

QC 20161024

Tillgänglig från: 2016-06-13 Skapad: 2016-06-09 Senast uppdaterad: 2017-11-28Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopusConference Homepage

Sök vidare i DiVA

Av författaren/redaktören
Bergsåker, B. Henric M.Bykov, IgorZhou, YushanPetersson, Per
Av organisationen
Fusionsplasmafysik
I samma tidskrift
Physica Scripta
Fusion, plasma och rymdfysikBearbetnings-, yt- och fogningsteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 237 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf