Studies of dust from JET with the ITER-Like Wall: Composition and internal structure
Results are presented for the dust survey performed at JET after the second experimental campaign with the ITER-Like Wall: 2013–2014. Samples were collected on adhesive stickers from several different positions in the divertor both on the tiles and on the divertor carrier. Brittle dust-forming depos...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-08-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179116300643 |
| _version_ | 1811294279286390784 |
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| author | E. Fortuna-Zaleśna J. Grzonka M. Rubel A. Garcia-Carrasco A. Widdowson A. Baron-Wiechec L. Ciupiński JET Contributors |
| author_facet | E. Fortuna-Zaleśna J. Grzonka M. Rubel A. Garcia-Carrasco A. Widdowson A. Baron-Wiechec L. Ciupiński JET Contributors |
| author_sort | E. Fortuna-Zaleśna |
| collection | DOAJ |
| description | Results are presented for the dust survey performed at JET after the second experimental campaign with the ITER-Like Wall: 2013–2014. Samples were collected on adhesive stickers from several different positions in the divertor both on the tiles and on the divertor carrier. Brittle dust-forming deposits on test mirrors from the inner divertor wall were also studied. Comprehensive characterization accomplished by a wide range of high-resolution microscopy techniques, including focused ion beam, has led to the identification of several classes of particles: (i) beryllium flakes originating either from the Be coatings from the inner wall cladding or Be-rich mixed co-deposits resulting from material migration; (ii) beryllium droplets and splashes; (iii) tungsten and nickel-rich (from Inconel) droplets; (iv) mixed material layers with a various content of small (8–200nm) W-Mo and Ni-based debris. A significant content of nitrogen from plasma edge cooling has been identified in all types of co-deposits. A comparison between particles collected after the first and second experimental campaign is also presented and discussed. Keywords: Dust, JET, ITER-Like Wall, Beryllium, Tungsten, Material mixing |
| first_indexed | 2024-04-13T05:14:12Z |
| format | Article |
| id | doaj.art-e3aca868e959415e954021ecd586e359 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-13T05:14:12Z |
| publishDate | 2017-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-e3aca868e959415e954021ecd586e3592022-12-22T03:00:56ZengElsevierNuclear Materials and Energy2352-17912017-08-0112582587Studies of dust from JET with the ITER-Like Wall: Composition and internal structureE. Fortuna-Zaleśna0J. Grzonka1M. Rubel2A. Garcia-Carrasco3A. Widdowson4A. Baron-Wiechec5L. Ciupiński6 JET Contributors7Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; Corresponding author.Faculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, Poland; Institute of Electronic Materials Technology, 01-919 Warsaw PolandDepartment of Fusion Plasma Physics, Royal Institute of Technology (KTH), 100 44 Stockholm, SwedenDepartment of Fusion Plasma Physics, Royal Institute of Technology (KTH), 100 44 Stockholm, SwedenCCFE, Culham Science Centre, Abingdon, OX14 3DB, UKCCFE, Culham Science Centre, Abingdon, OX14 3DB, UKFaculty of Materials Science and Engineering, Warsaw University of Technology, 02-507 Warsaw, PolandEUROfusion Consortium, JET, Culham Science Centre, Abingdon, OX14 3DB, UKResults are presented for the dust survey performed at JET after the second experimental campaign with the ITER-Like Wall: 2013–2014. Samples were collected on adhesive stickers from several different positions in the divertor both on the tiles and on the divertor carrier. Brittle dust-forming deposits on test mirrors from the inner divertor wall were also studied. Comprehensive characterization accomplished by a wide range of high-resolution microscopy techniques, including focused ion beam, has led to the identification of several classes of particles: (i) beryllium flakes originating either from the Be coatings from the inner wall cladding or Be-rich mixed co-deposits resulting from material migration; (ii) beryllium droplets and splashes; (iii) tungsten and nickel-rich (from Inconel) droplets; (iv) mixed material layers with a various content of small (8–200nm) W-Mo and Ni-based debris. A significant content of nitrogen from plasma edge cooling has been identified in all types of co-deposits. A comparison between particles collected after the first and second experimental campaign is also presented and discussed. Keywords: Dust, JET, ITER-Like Wall, Beryllium, Tungsten, Material mixinghttp://www.sciencedirect.com/science/article/pii/S2352179116300643 |
| spellingShingle | E. Fortuna-Zaleśna J. Grzonka M. Rubel A. Garcia-Carrasco A. Widdowson A. Baron-Wiechec L. Ciupiński JET Contributors Studies of dust from JET with the ITER-Like Wall: Composition and internal structure Nuclear Materials and Energy |
| title | Studies of dust from JET with the ITER-Like Wall: Composition and internal structure |
| title_full | Studies of dust from JET with the ITER-Like Wall: Composition and internal structure |
| title_fullStr | Studies of dust from JET with the ITER-Like Wall: Composition and internal structure |
| title_full_unstemmed | Studies of dust from JET with the ITER-Like Wall: Composition and internal structure |
| title_short | Studies of dust from JET with the ITER-Like Wall: Composition and internal structure |
| title_sort | studies of dust from jet with the iter like wall composition and internal structure |
| url | http://www.sciencedirect.com/science/article/pii/S2352179116300643 |
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