Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings

Matti Laan; Antti Hakola; Peter Paris; Kaarel Piip; Märt Aints; Indrek Jõgi; Jelena Kozlova; Hugo Mändar; Cristian Lungu; Corneliu Porosnicu; Eduard Grigore; Cristian Ruset; Jukka Kolehmainen; Sanna Tervakangas

doi:10.1016/j.fusengdes.2017.03.173

Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings

Matti Laan^*
, Antti Hakola
, Peter Paris
, Kaarel Piip
, Märt Aints
, Indrek Jõgi
, Jelena Kozlova
, Hugo Mändar
, Cristian Lungu
, Corneliu Porosnicu
, Eduard Grigore
, Cristian Ruset
, Jukka Kolehmainen
, Sanna Tervakangas

^*Corresponding author for this work

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

9 Citations (Scopus)

Abstract

Laser induced breakdown spectroscopy (LIBS) has been applied to study ITER-relevant coatings with different surface morphology and crystallinity. LIBS elemental depth profiles were compared with those obtained by secondary ion mass spectrometry (SIMS). Depending on surface morphology and crystallinity, the laser ablation rate of the coatings changed by an order of magnitude, the highest ablation rate had samples prepared by thermoionic vacuum discharge. The inclusion of aluminum (proxy for beryllium) increased the ablation rate by a factor of>6. In addition, for W-Al coatings the ablation was non-stoichiometric.

Original language	English
Pages (from-to)	296-300
Journal	Fusion Engineering and Design
Volume	121
DOIs	https://doi.org/10.1016/j.fusengdes.2017.03.173
Publication status	Published - 2017
MoE publication type	A1 Journal article-refereed

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

ITER relevant coatings
laser induced breakdown spectroscopy (LIBS) diagnostics
ablation rate
surface morphology
divertors

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10.1016/j.fusengdes.2017.03.173

Cite this

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title = "Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings",

abstract = "Laser induced breakdown spectroscopy (LIBS) has been applied to study ITER-relevant coatings with different surface morphology and crystallinity. LIBS elemental depth profiles were compared with those obtained by secondary ion mass spectrometry (SIMS). Depending on surface morphology and crystallinity, the laser ablation rate of the coatings changed by an order of magnitude, the highest ablation rate had samples prepared by thermoionic vacuum discharge. The inclusion of aluminum (proxy for beryllium) increased the ablation rate by a factor of>6. In addition, for W-Al coatings the ablation was non-stoichiometric.",

keywords = "ITER relevant coatings, laser induced breakdown spectroscopy (LIBS) diagnostics, ablation rate, surface morphology, divertors",

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doi = "10.1016/j.fusengdes.2017.03.173",

language = "English",

volume = "121",

pages = "296--300",

journal = "Fusion Engineering and Design",

issn = "0920-3796",

publisher = "Elsevier",

}

TY - JOUR

T1 - Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings

AU - Laan, Matti

AU - Hakola, Antti

AU - Paris, Peter

AU - Piip, Kaarel

AU - Aints, Märt

AU - Jõgi, Indrek

AU - Kozlova, Jelena

AU - Mändar, Hugo

AU - Lungu, Cristian

AU - Porosnicu, Corneliu

AU - Grigore, Eduard

AU - Ruset, Cristian

AU - Kolehmainen, Jukka

AU - Tervakangas, Sanna

PY - 2017

Y1 - 2017

N2 - Laser induced breakdown spectroscopy (LIBS) has been applied to study ITER-relevant coatings with different surface morphology and crystallinity. LIBS elemental depth profiles were compared with those obtained by secondary ion mass spectrometry (SIMS). Depending on surface morphology and crystallinity, the laser ablation rate of the coatings changed by an order of magnitude, the highest ablation rate had samples prepared by thermoionic vacuum discharge. The inclusion of aluminum (proxy for beryllium) increased the ablation rate by a factor of>6. In addition, for W-Al coatings the ablation was non-stoichiometric.

AB - Laser induced breakdown spectroscopy (LIBS) has been applied to study ITER-relevant coatings with different surface morphology and crystallinity. LIBS elemental depth profiles were compared with those obtained by secondary ion mass spectrometry (SIMS). Depending on surface morphology and crystallinity, the laser ablation rate of the coatings changed by an order of magnitude, the highest ablation rate had samples prepared by thermoionic vacuum discharge. The inclusion of aluminum (proxy for beryllium) increased the ablation rate by a factor of>6. In addition, for W-Al coatings the ablation was non-stoichiometric.

KW - ITER relevant coatings

KW - laser induced breakdown spectroscopy (LIBS) diagnostics

KW - ablation rate

KW - surface morphology

KW - divertors

UR - https://www.scopus.com/pages/publications/85019769407

U2 - 10.1016/j.fusengdes.2017.03.173

DO - 10.1016/j.fusengdes.2017.03.173

M3 - Article

SN - 0920-3796

VL - 121

SP - 296

EP - 300

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings

Abstract

UN SDGs

Keywords

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