Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade

Peeter Paris; Kaarel Piip; Antti Hakola; Matti Laan; Märt Aints; Seppo Koivuranta; Jari Likonen; Aleksandr Lissovski; Matej Mayer; Rudolf Neu; Volker Rohde; Kazuyoshi Sugiyama

doi:10.1016/j.fusengdes.2015.03.004

Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade

Peeter Paris, Kaarel Piip, Antti Hakola, Matti Laan, Märt Aints, Seppo Koivuranta, Jari Likonen, Aleksandr Lissovski, Matej Mayer, Rudolf Neu, Volker Rohde, Kazuyoshi Sugiyama

Associate Professorship of Plasma-Material-Wechselwirkung

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

The paper deals with the development of laser induced breakdown spectroscopy (LIBS) into an in situ method for studying erosion/deposition processes at the first walls of fusion reactors. To this end, samples extracted from the divertor tiles of ASDEX Upgrade after the 2009 plasma operations were analyzed using LIBS for their composition and the results were compared with other post mortem deposition data. Quantitative depth profiles for the elemental concentrations were extracted from LIBS spectra by applying a novel data processing method. In addition, both multiline and multispot averaging procedures were applied to reduce fluctuations in the data. The LIBS concentration profiles matched qualitatively with those given by secondary ion mass spectrometry and quantitatively with the ion-beam data. The deuterium content of the samples could be reliably determined if the surface densities were >10¹⁷ at/cm².

Original language	English
Pages (from-to)	1349-1352
Number of pages	4
Journal	Fusion Engineering and Design
Volume	98-99
DOIs	https://doi.org/10.1016/j.fusengdes.2015.03.004
State	Published - 1 Oct 2015

Keywords

Data processing
Elemental depth profiles
Fuel retention
LIBS diagnostics
Plasma-facing components

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10.1016/j.fusengdes.2015.03.004

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Paris, P., Piip, K., Hakola, A., Laan, M., Aints, M., Koivuranta, S., Likonen, J., Lissovski, A., Mayer, M., Neu, R., Rohde, V., & Sugiyama, K. (2015). Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade. Fusion Engineering and Design, 98-99, 1349-1352. https://doi.org/10.1016/j.fusengdes.2015.03.004

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title = "Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade",

abstract = "The paper deals with the development of laser induced breakdown spectroscopy (LIBS) into an in situ method for studying erosion/deposition processes at the first walls of fusion reactors. To this end, samples extracted from the divertor tiles of ASDEX Upgrade after the 2009 plasma operations were analyzed using LIBS for their composition and the results were compared with other post mortem deposition data. Quantitative depth profiles for the elemental concentrations were extracted from LIBS spectra by applying a novel data processing method. In addition, both multiline and multispot averaging procedures were applied to reduce fluctuations in the data. The LIBS concentration profiles matched qualitatively with those given by secondary ion mass spectrometry and quantitatively with the ion-beam data. The deuterium content of the samples could be reliably determined if the surface densities were >1017 at/cm2.",

keywords = "Data processing, Elemental depth profiles, Fuel retention, LIBS diagnostics, Plasma-facing components",

author = "Peeter Paris and Kaarel Piip and Antti Hakola and Matti Laan and M{\"a}rt Aints and Seppo Koivuranta and Jari Likonen and Aleksandr Lissovski and Matej Mayer and Rudolf Neu and Volker Rohde and Kazuyoshi Sugiyama",

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AU - Paris, Peeter

AU - Piip, Kaarel

AU - Hakola, Antti

AU - Laan, Matti

AU - Aints, Märt

AU - Koivuranta, Seppo

AU - Likonen, Jari

AU - Lissovski, Aleksandr

AU - Mayer, Matej

AU - Neu, Rudolf

AU - Rohde, Volker

AU - Sugiyama, Kazuyoshi

PY - 2015/10/1

Y1 - 2015/10/1

N2 - The paper deals with the development of laser induced breakdown spectroscopy (LIBS) into an in situ method for studying erosion/deposition processes at the first walls of fusion reactors. To this end, samples extracted from the divertor tiles of ASDEX Upgrade after the 2009 plasma operations were analyzed using LIBS for their composition and the results were compared with other post mortem deposition data. Quantitative depth profiles for the elemental concentrations were extracted from LIBS spectra by applying a novel data processing method. In addition, both multiline and multispot averaging procedures were applied to reduce fluctuations in the data. The LIBS concentration profiles matched qualitatively with those given by secondary ion mass spectrometry and quantitatively with the ion-beam data. The deuterium content of the samples could be reliably determined if the surface densities were >1017 at/cm2.

AB - The paper deals with the development of laser induced breakdown spectroscopy (LIBS) into an in situ method for studying erosion/deposition processes at the first walls of fusion reactors. To this end, samples extracted from the divertor tiles of ASDEX Upgrade after the 2009 plasma operations were analyzed using LIBS for their composition and the results were compared with other post mortem deposition data. Quantitative depth profiles for the elemental concentrations were extracted from LIBS spectra by applying a novel data processing method. In addition, both multiline and multispot averaging procedures were applied to reduce fluctuations in the data. The LIBS concentration profiles matched qualitatively with those given by secondary ion mass spectrometry and quantitatively with the ion-beam data. The deuterium content of the samples could be reliably determined if the surface densities were >1017 at/cm2.

KW - Data processing

KW - Elemental depth profiles

KW - Fuel retention

KW - LIBS diagnostics

KW - Plasma-facing components

UR - http://www.scopus.com/inward/record.url?scp=84943584834&partnerID=8YFLogxK

U2 - 10.1016/j.fusengdes.2015.03.004

DO - 10.1016/j.fusengdes.2015.03.004

M3 - Article

AN - SCOPUS:84943584834

SN - 0920-3796

VL - 98-99

SP - 1349

EP - 1352

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Development of laser induced breakdown spectroscopy for studying erosion, deposition, and fuel retention in ASDEX Upgrade

Abstract

Keywords

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