Structural studies of deposited layers on JET MkII-SRP inner divertor tiles

Jari Likonen (Corresponding Author), J.P. Coad, Elizaveta Vainonen-Ahlgren, Tommi Renvall, D.E. Hole, M. Rubel, A. Widdowson

Research output: Contribution to journalArticleScientificpeer-review

27 Citations (Scopus)

Abstract

Deposited layers formed on JET inner divertor tiles during 1998-2004 and 2001-2004 campaigns have been investigated using secondary ion mass spectrometry (SIMS), Rutherford Backscattering (RBS) and optical microscopy. The thickness of the deposit decreases from the top of vertical tile 1 to the bottom and then increases on vertical tile 3 reaching ¡­60 ¥ìm. There are even thicker deposits on the small sloping section of the floor tile 4 that can be accessed by the plasma at the inner divertor legs. Deposited films on divertor inner wall tiles are enriched in Be indicating chemical erosion of C and a multi-step transport of C to the shadowed area on floor tile 4. The films have generally a layered and globular structure in the areas with plasma contact.
Original languageEnglish
Pages (from-to)190-195
JournalJournal of Nuclear Materials
Volume363-365
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

tiles
Tile
Deposits
deposits
Plasmas
Rutherford backscattering spectroscopy
Secondary ion mass spectrometry
secondary ion mass spectrometry
Optical microscopy
erosion
Erosion
backscattering
microscopy

Keywords

  • Beryllium
  • Carbon based materials
  • Divertor
  • Rutherford backscattering
  • Surface analysis

Cite this

Likonen, J., Coad, J. P., Vainonen-Ahlgren, E., Renvall, T., Hole, D. E., Rubel, M., & Widdowson, A. (2007). Structural studies of deposited layers on JET MkII-SRP inner divertor tiles. Journal of Nuclear Materials, 363-365, 190-195. https://doi.org/10.1016/j.jnucmat.2007.01.007
Likonen, Jari ; Coad, J.P. ; Vainonen-Ahlgren, Elizaveta ; Renvall, Tommi ; Hole, D.E. ; Rubel, M. ; Widdowson, A. / Structural studies of deposited layers on JET MkII-SRP inner divertor tiles. In: Journal of Nuclear Materials. 2007 ; Vol. 363-365. pp. 190-195.
@article{a3a264640a054dfdba61b431275fa40d,
title = "Structural studies of deposited layers on JET MkII-SRP inner divertor tiles",
abstract = "Deposited layers formed on JET inner divertor tiles during 1998-2004 and 2001-2004 campaigns have been investigated using secondary ion mass spectrometry (SIMS), Rutherford Backscattering (RBS) and optical microscopy. The thickness of the deposit decreases from the top of vertical tile 1 to the bottom and then increases on vertical tile 3 reaching ¡­60 ¥{\`i}m. There are even thicker deposits on the small sloping section of the floor tile 4 that can be accessed by the plasma at the inner divertor legs. Deposited films on divertor inner wall tiles are enriched in Be indicating chemical erosion of C and a multi-step transport of C to the shadowed area on floor tile 4. The films have generally a layered and globular structure in the areas with plasma contact.",
keywords = "Beryllium, Carbon based materials, Divertor, Rutherford backscattering, Surface analysis",
author = "Jari Likonen and J.P. Coad and Elizaveta Vainonen-Ahlgren and Tommi Renvall and D.E. Hole and M. Rubel and A. Widdowson",
year = "2007",
doi = "10.1016/j.jnucmat.2007.01.007",
language = "English",
volume = "363-365",
pages = "190--195",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

Likonen, J, Coad, JP, Vainonen-Ahlgren, E, Renvall, T, Hole, DE, Rubel, M & Widdowson, A 2007, 'Structural studies of deposited layers on JET MkII-SRP inner divertor tiles', Journal of Nuclear Materials, vol. 363-365, pp. 190-195. https://doi.org/10.1016/j.jnucmat.2007.01.007

Structural studies of deposited layers on JET MkII-SRP inner divertor tiles. / Likonen, Jari (Corresponding Author); Coad, J.P.; Vainonen-Ahlgren, Elizaveta; Renvall, Tommi; Hole, D.E.; Rubel, M.; Widdowson, A.

In: Journal of Nuclear Materials, Vol. 363-365, 2007, p. 190-195.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Structural studies of deposited layers on JET MkII-SRP inner divertor tiles

AU - Likonen, Jari

AU - Coad, J.P.

AU - Vainonen-Ahlgren, Elizaveta

AU - Renvall, Tommi

AU - Hole, D.E.

AU - Rubel, M.

AU - Widdowson, A.

PY - 2007

Y1 - 2007

N2 - Deposited layers formed on JET inner divertor tiles during 1998-2004 and 2001-2004 campaigns have been investigated using secondary ion mass spectrometry (SIMS), Rutherford Backscattering (RBS) and optical microscopy. The thickness of the deposit decreases from the top of vertical tile 1 to the bottom and then increases on vertical tile 3 reaching ¡­60 ¥ìm. There are even thicker deposits on the small sloping section of the floor tile 4 that can be accessed by the plasma at the inner divertor legs. Deposited films on divertor inner wall tiles are enriched in Be indicating chemical erosion of C and a multi-step transport of C to the shadowed area on floor tile 4. The films have generally a layered and globular structure in the areas with plasma contact.

AB - Deposited layers formed on JET inner divertor tiles during 1998-2004 and 2001-2004 campaigns have been investigated using secondary ion mass spectrometry (SIMS), Rutherford Backscattering (RBS) and optical microscopy. The thickness of the deposit decreases from the top of vertical tile 1 to the bottom and then increases on vertical tile 3 reaching ¡­60 ¥ìm. There are even thicker deposits on the small sloping section of the floor tile 4 that can be accessed by the plasma at the inner divertor legs. Deposited films on divertor inner wall tiles are enriched in Be indicating chemical erosion of C and a multi-step transport of C to the shadowed area on floor tile 4. The films have generally a layered and globular structure in the areas with plasma contact.

KW - Beryllium

KW - Carbon based materials

KW - Divertor

KW - Rutherford backscattering

KW - Surface analysis

U2 - 10.1016/j.jnucmat.2007.01.007

DO - 10.1016/j.jnucmat.2007.01.007

M3 - Article

VL - 363-365

SP - 190

EP - 195

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

ER -