Co-deposited layers in the divertor region of JET-ILW

P. Petersson (Corresponding Author), M. Rubel, H.G. Esser, J. Likonen, S. Koivuranta, A. Widdowson, JET-EFDA Contributores

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.
Original languageEnglish
Pages (from-to)814-817
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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Tungsten
Beryllium
tungsten
Nitrogen
tiles
Tile
beryllium
Carbon
nitrogen 15
Heavy Ions
nitrogen
Inconel (trademark)
Quartz
probes
Deuterium
carbon
Heavy ions
microbalances
erosion
tracers

Cite this

Petersson, P., Rubel, M., Esser, H. G., Likonen, J., Koivuranta, S., Widdowson, A., & Contributores, JET-EFDA. (2015). Co-deposited layers in the divertor region of JET-ILW. Journal of Nuclear Materials, 463, 814-817. https://doi.org/10.1016/j.jnucmat.2014.12.077
Petersson, P. ; Rubel, M. ; Esser, H.G. ; Likonen, J. ; Koivuranta, S. ; Widdowson, A. ; Contributores, JET-EFDA. / Co-deposited layers in the divertor region of JET-ILW. In: Journal of Nuclear Materials. 2015 ; Vol. 463. pp. 814-817.
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abstract = "Tungsten-coated carbon tiles from a poloidal cross-section of the divertor and several types of erosion- deposition probes from the shadowed areas in the divertor were studied using heavy ion elastic recoil detection to obtain quantitative and depth-resolved deposition patterns. Deuterium, beryllium, carbon, nitrogen and oxygen along with tungsten and Inconel components are the main species detected in the studied surface region. The top of Tile 1 in the inner divertor is the main deposition area where the greatest amounts of deposited species are measured. Beryllium and tungsten-containing deposits on the probes (test mirrors and quartz microbalance) indicate that both low-Z and high-Z metals are transported to remote areas. Deposition of nitrogen-15 tracer used for edge cooling only at the end of experimental campaigns in 2012 was also detected giving evidence that nitrogen is effectively retained in wall components.",
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Petersson, P, Rubel, M, Esser, HG, Likonen, J, Koivuranta, S, Widdowson, A & Contributores, JET-EFDA 2015, 'Co-deposited layers in the divertor region of JET-ILW', Journal of Nuclear Materials, vol. 463, pp. 814-817. https://doi.org/10.1016/j.jnucmat.2014.12.077

Co-deposited layers in the divertor region of JET-ILW. / Petersson, P. (Corresponding Author); Rubel, M.; Esser, H.G.; Likonen, J.; Koivuranta, S.; Widdowson, A.; Contributores, JET-EFDA.

In: Journal of Nuclear Materials, Vol. 463, 2015, p. 814-817.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Petersson, P.

AU - Rubel, M.

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AU - Widdowson, A.

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