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Deep deuterium rete...
Deep deuterium retention and Be/W mixing at tungsten coated surfaces in the JET divertor
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- Bergsåker, B. Henric M. (författare)
- KTH,Fusionsplasmafysik,EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;KTH Royal Inst Technol, Sch Elect Engn, Dept Fus Plasma Phys, SE-10405 Stockholm, Sweden.
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- Bykov, Igor (författare)
- KTH,Fusionsplasmafysik,EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;KTH Royal Inst Technol, Sch Elect Engn, Dept Fus Plasma Phys, SE-10405 Stockholm, Sweden.
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- Zhou, Yushan (författare)
- KTH,Fusionsplasmafysik,EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;KTH Royal Inst Technol, Sch Elect Engn, Dept Fus Plasma Phys, SE-10405 Stockholm, Sweden.
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visa fler...
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- Petersson, Per (författare)
- KTH,Fusionsplasmafysik,EUROfusion Consortium, Culham Science Centre, JET, Abingdon, United Kingdom,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;KTH Royal Inst Technol, Sch Elect Engn, Dept Fus Plasma Phys, SE-10405 Stockholm, Sweden.
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- Possnert, Göran (författare)
- Uppsala universitet,Tandemlaboratoriet,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
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- Likonen, J. (författare)
- EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;VTT Tech Res Ctr Finland, POB 1000, FI-02044 Espoo, Finland.
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- Pettersson, Jean (författare)
- Uppsala universitet,Analytisk kemi,EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
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- Koivuranta, S. (författare)
- EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;VTT Tech Res Ctr Finland, POB 1000, FI-02044 Espoo, Finland.
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- Widdowson, A. M. (författare)
- EUROfus Consortium, JET, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.;CCFE, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England.
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JET contributors, The (bidragsgivare)
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(creator_code:org_t)
- Institute of Physics Publishing (IOPP), 2016
- 2016
- Engelska.
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Ingår i: Physica Scripta. - : Institute of Physics Publishing (IOPP). - 0031-8949 .- 1402-4896. ; T167
- Relaterad länk:
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http://irfm.cea.fr/p...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Nyckelord
- 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
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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