Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

H. Bergsåker; B. Emmoth; P. Petersson; G. Possnert; J.P. Coad; Jari Likonen; Tommi Renvall

doi:10.1016/j.jnucmat.2007.01.046

Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

H. Bergsåker^*
, B. Emmoth
, P. Petersson
, G. Possnert
, J.P. Coad
, Jari Likonen
, Tommi Renvall

^*Corresponding author for this work

KTH Royal Institute of Technology
Uppsala University
National Nuclear Laboratory (Abingdon)

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

14 Citations (Scopus)

Abstract

Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak.
Since the layers are about 100 µm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few µm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.

Original language	English
Pages (from-to)	215-221
Journal	Journal of Nuclear Materials
Volume	362
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jnucmat.2007.01.046
Publication status	Published - 2007
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

surface analysis
divertor
JET
ITER
tokamak
fusion energy
plasma
layers

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10.1016/j.jnucmat.2007.01.046

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title = "Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor",

abstract = "Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 µm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few µm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10\%.",

keywords = "surface analysis, divertor, JET, ITER, tokamak, fusion energy, plasma, layers",

author = "H. Bergs{\aa}ker and B. Emmoth and P. Petersson and G. Possnert and J.P. Coad and Jari Likonen and Tommi Renvall",

year = "2007",

doi = "10.1016/j.jnucmat.2007.01.046",

language = "English",

volume = "362",

pages = "215--221",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "2-3",

}

TY - JOUR

T1 - Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

AU - Bergsåker, H.

AU - Emmoth, B.

AU - Petersson, P.

AU - Possnert, G.

AU - Coad, J.P.

AU - Likonen, Jari

AU - Renvall, Tommi

PY - 2007

Y1 - 2007

N2 - Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 µm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few µm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.

AB - Ion micro beam analysis has been applied to the investigation of plasma deposited layers covering the divertor tiles in the JET tokamak. Since the layers are about 100 µm thick they are too thick to be completely investigated by ordinary ion beam analysis. Cross sections of the layers were prepared by cutting and polishing. Elemental depth profiles were determined from the two dimensional images that could be derived by nuclear reaction analysis and resonant backscattering spectrometry, using ion beams focused to a few µm spot size. A combination of analysis methods are shown, which allow measurements of the concentration profiles of carbon, beryllium, deuterium, oxygen and stainless steel components at levels of a few percent, with an accuracy better than 10%.

KW - surface analysis

KW - divertor

KW - JET

KW - ITER

KW - tokamak

KW - fusion energy

KW - plasma

KW - layers

U2 - 10.1016/j.jnucmat.2007.01.046

DO - 10.1016/j.jnucmat.2007.01.046

M3 - Article

SN - 0022-3115

VL - 362

SP - 215

EP - 221

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 2-3

ER -

Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor

Abstract

UN SDGs

Keywords

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