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

H. Bergsåker (Corresponding Author), B. Emmoth, P. Petersson, G. Possnert, J.P. Coad, Jari Likonen, Tommi Renvall

Research output: Contribution to journalArticleScientificpeer-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 languageEnglish
Pages (from-to)215-221
JournalJournal of Nuclear Materials
Volume362
Issue number2-3
DOIs
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed

Fingerprint

Beryllium
Nuclear reactions
microbeams
Deuterium
Focused ion beams
Stainless Steel
Backscattering
Tile
Polishing
nuclear reactions
Spectrometry
Ion beams
surface layers
Carbon
Stainless steel
steels
Ions
Oxygen
Plasmas
cross sections

Keywords

  • surface analysis
  • divertor
  • JET
  • ITER
  • tokamak
  • fusion energy
  • plasma
  • layers

Cite this

Bergsåker, H. ; Emmoth, B. ; Petersson, P. ; Possnert, G. ; Coad, J.P. ; Likonen, Jari ; Renvall, Tommi. / Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor. In: Journal of Nuclear Materials. 2007 ; Vol. 362, No. 2-3. pp. 215-221.
@article{38a1dd80475b4bc88c895eeb031f9204,
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",

}

Nuclear reaction analysis with ion microbeam of cross sections of surface layers deposited in a tokamak divertor. / Bergsåker, H. (Corresponding Author); Emmoth, B.; Petersson, P.; Possnert, G.; Coad, J.P.; Likonen, Jari; Renvall, Tommi.

In: Journal of Nuclear Materials, Vol. 362, No. 2-3, 2007, p. 215-221.

Research output: Contribution to journalArticleScientificpeer-review

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

VL - 362

SP - 215

EP - 221

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 2-3

ER -