Applicability of LIBS for in situ monitoring of deposition and retention on the ITER-like wall of JET: Comparison to SIMS

Juuso Karhunen; Antti Hakola; Jari Likonen; A. Lissovski; M. Laan; P. Paris; JET-EFDA contributors

doi:10.1016/j.jnucmat.2014.10.028

Applicability of LIBS for in situ monitoring of deposition and retention on the ITER-like wall of JET: Comparison to SIMS

Juuso Karhunen (Corresponding Author), Antti Hakola, Jari Likonen, A. Lissovski, M. Laan, P. Paris, JET-EFDA contributors

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Abstract

Laser-induced breakdown spectroscopy (LIBS) is a potential method for in situ monitoring of deposition and retention in fusion devices and is developed with the aim of being integrated in the diagnostics system of ITER. The inner divertor of the ITER-like wall of JET was studied by LIBS to show the applicability of the method in JET and ITER. The elemental depth profiles agreed with those given by earlier SIMS measurements. Deuterium was detected in the deposited layers and successfully distinguished from hydrogen. The poloidal patterns of the retained deuterium and deposited beryllium were also in line with the SIMS results with the largest deposition and retention taking place on the top part of Tile 1 and bottom part of Tile 3. The results of these studies support LIBS as a promising in situ solution to replace the present post mortem methods in monitoring metallic deposited layers.

Original language	English
Pages (from-to)	931-935
Journal	Journal of Nuclear Materials
Volume	463
DOIs	https://doi.org/10.1016/j.jnucmat.2014.10.028
Publication status	Published - 2015
MoE publication type	A1 Journal article-refereed

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10.1016/j.jnucmat.2014.10.028

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title = "Applicability of LIBS for in situ monitoring of deposition and retention on the ITER-like wall of JET: Comparison to SIMS",

abstract = "Laser-induced breakdown spectroscopy (LIBS) is a potential method for in situ monitoring of deposition and retention in fusion devices and is developed with the aim of being integrated in the diagnostics system of ITER. The inner divertor of the ITER-like wall of JET was studied by LIBS to show the applicability of the method in JET and ITER. The elemental depth profiles agreed with those given by earlier SIMS measurements. Deuterium was detected in the deposited layers and successfully distinguished from hydrogen. The poloidal patterns of the retained deuterium and deposited beryllium were also in line with the SIMS results with the largest deposition and retention taking place on the top part of Tile 1 and bottom part of Tile 3. The results of these studies support LIBS as a promising in situ solution to replace the present post mortem methods in monitoring metallic deposited layers.",

author = "Juuso Karhunen and Antti Hakola and Jari Likonen and A. Lissovski and M. Laan and P. Paris and {JET-EFDA contributors}",

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year = "2015",

doi = "10.1016/j.jnucmat.2014.10.028",

language = "English",

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journal = "Journal of Nuclear Materials",

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TY - JOUR

T1 - Applicability of LIBS for in situ monitoring of deposition and retention on the ITER-like wall of JET

T2 - Comparison to SIMS

AU - Karhunen, Juuso

AU - Hakola, Antti

AU - Likonen, Jari

AU - Lissovski, A.

AU - Laan, M.

AU - Paris, P.

AU - JET-EFDA contributors

N1 - Project code: 104445

PY - 2015

Y1 - 2015

N2 - Laser-induced breakdown spectroscopy (LIBS) is a potential method for in situ monitoring of deposition and retention in fusion devices and is developed with the aim of being integrated in the diagnostics system of ITER. The inner divertor of the ITER-like wall of JET was studied by LIBS to show the applicability of the method in JET and ITER. The elemental depth profiles agreed with those given by earlier SIMS measurements. Deuterium was detected in the deposited layers and successfully distinguished from hydrogen. The poloidal patterns of the retained deuterium and deposited beryllium were also in line with the SIMS results with the largest deposition and retention taking place on the top part of Tile 1 and bottom part of Tile 3. The results of these studies support LIBS as a promising in situ solution to replace the present post mortem methods in monitoring metallic deposited layers.

AB - Laser-induced breakdown spectroscopy (LIBS) is a potential method for in situ monitoring of deposition and retention in fusion devices and is developed with the aim of being integrated in the diagnostics system of ITER. The inner divertor of the ITER-like wall of JET was studied by LIBS to show the applicability of the method in JET and ITER. The elemental depth profiles agreed with those given by earlier SIMS measurements. Deuterium was detected in the deposited layers and successfully distinguished from hydrogen. The poloidal patterns of the retained deuterium and deposited beryllium were also in line with the SIMS results with the largest deposition and retention taking place on the top part of Tile 1 and bottom part of Tile 3. The results of these studies support LIBS as a promising in situ solution to replace the present post mortem methods in monitoring metallic deposited layers.

U2 - 10.1016/j.jnucmat.2014.10.028

DO - 10.1016/j.jnucmat.2014.10.028

M3 - Article

SN - 0022-3115

VL - 463

SP - 931

EP - 935

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Applicability of LIBS for in situ monitoring of deposition and retention on the ITER-like wall of JET: Comparison to SIMS

Abstract

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