Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER

Juuso Karhunen (Corresponding Author), Antti Hakola, Jari Likonen, A. Lissovski, P. Paris, M. Laan, K. Piip, C. Porosnicu, C.P. Lungu, K. Sugiyama

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

Laser-induced breakdown spectroscopy (LIBS) experiments on different ITER-relevant beryllium-tungsten mixtures were performed to develop LIBS for tokamak applications. Some of the samples were doped or implanted with deuterium to simulate fuel retention. The results indicate that beryllium and tungsten have a number of distinguishable spectral lines for diagnostics purposes, but detection of deuterium is challenged by its low concentration and low fluences used. By studying the depth profiles of the coatings, the removal rates of the layers were observed to depend on the thickness, composition and deuterium content of the coating. Quantitative studies of the compositions were made by calibration-free LIBS, and the results agreed well with those given by ion-beam methods.
Original languageEnglish
Article number014067
Number of pages4
JournalPhysica Scripta
Issue numberT159
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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Laser-induced Breakdown Spectroscopy
laser-induced breakdown spectroscopy
deuterium
beryllium
Coating
tungsten
coatings
line spectra
low concentrations
Diagnostics
fluence
Calibration
ion beams
Line
profiles
Experiment

Cite this

Karhunen, Juuso ; Hakola, Antti ; Likonen, Jari ; Lissovski, A. ; Paris, P. ; Laan, M. ; Piip, K. ; Porosnicu, C. ; Lungu, C.P. ; Sugiyama, K. / Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER. In: Physica Scripta. 2014 ; No. T159.
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abstract = "Laser-induced breakdown spectroscopy (LIBS) experiments on different ITER-relevant beryllium-tungsten mixtures were performed to develop LIBS for tokamak applications. Some of the samples were doped or implanted with deuterium to simulate fuel retention. The results indicate that beryllium and tungsten have a number of distinguishable spectral lines for diagnostics purposes, but detection of deuterium is challenged by its low concentration and low fluences used. By studying the depth profiles of the coatings, the removal rates of the layers were observed to depend on the thickness, composition and deuterium content of the coating. Quantitative studies of the compositions were made by calibration-free LIBS, and the results agreed well with those given by ion-beam methods.",
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Karhunen, J, Hakola, A, Likonen, J, Lissovski, A, Paris, P, Laan, M, Piip, K, Porosnicu, C, Lungu, CP & Sugiyama, K 2014, 'Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER', Physica Scripta, no. T159, 014067. https://doi.org/10.1088/0031-8949/2014/T159/014067

Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER. / Karhunen, Juuso (Corresponding Author); Hakola, Antti; Likonen, Jari; Lissovski, A.; Paris, P.; Laan, M.; Piip, K.; Porosnicu, C.; Lungu, C.P.; Sugiyama, K.

In: Physica Scripta, No. T159, 014067, 2014.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER

AU - Karhunen, Juuso

AU - Hakola, Antti

AU - Likonen, Jari

AU - Lissovski, A.

AU - Paris, P.

AU - Laan, M.

AU - Piip, K.

AU - Porosnicu, C.

AU - Lungu, C.P.

AU - Sugiyama, K.

N1 - Project code: 85724

PY - 2014

Y1 - 2014

N2 - Laser-induced breakdown spectroscopy (LIBS) experiments on different ITER-relevant beryllium-tungsten mixtures were performed to develop LIBS for tokamak applications. Some of the samples were doped or implanted with deuterium to simulate fuel retention. The results indicate that beryllium and tungsten have a number of distinguishable spectral lines for diagnostics purposes, but detection of deuterium is challenged by its low concentration and low fluences used. By studying the depth profiles of the coatings, the removal rates of the layers were observed to depend on the thickness, composition and deuterium content of the coating. Quantitative studies of the compositions were made by calibration-free LIBS, and the results agreed well with those given by ion-beam methods.

AB - Laser-induced breakdown spectroscopy (LIBS) experiments on different ITER-relevant beryllium-tungsten mixtures were performed to develop LIBS for tokamak applications. Some of the samples were doped or implanted with deuterium to simulate fuel retention. The results indicate that beryllium and tungsten have a number of distinguishable spectral lines for diagnostics purposes, but detection of deuterium is challenged by its low concentration and low fluences used. By studying the depth profiles of the coatings, the removal rates of the layers were observed to depend on the thickness, composition and deuterium content of the coating. Quantitative studies of the compositions were made by calibration-free LIBS, and the results agreed well with those given by ion-beam methods.

U2 - 10.1088/0031-8949/2014/T159/014067

DO - 10.1088/0031-8949/2014/T159/014067

M3 - Article

JO - Physica Scripta

JF - Physica Scripta

SN - 0031-8949

IS - T159

M1 - 014067

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