High resolution scanning transmission electron microscopy (HR STEM) analysis of re-deposited layer on ASDEX Upgrade tile

M. Rasinski; E. Fortuna-Zalesna; M. Mayer; R. Neu; T. Plocinski; M. Lewandowska; K. J. Kurzydlowski

doi:10.1016/j.fusengdes.2011.02.085

High resolution scanning transmission electron microscopy (HR STEM) analysis of re-deposited layer on ASDEX Upgrade tile

M. Rasinski, E. Fortuna-Zalesna, M. Mayer, R. Neu, T. Plocinski, M. Lewandowska, K. J. Kurzydlowski

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

11 Scopus citations

Abstract

Erosion and re-deposition of plasma-facing components (PFCs) is one of the most important issues in fusion devices and as such it is an area of interest for many research groups. However, the structure and composition of re-deposited layers as well as the mechanism and condition of their formation are not yet fully described and understood. In the present study, the structure and the composition of co-deposited layers, which developed at the outer divertor strike point tiles in ASDEX Upgrade during the 2009 campaign were examined. High resolution scanning transmission electron microscopy (HRSTEM) combined with energy-dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS) have been used to identify deposits composition and morphology. Tungsten foam like structure and co-deposits rich in tungsten, oxygen, carbon, boron and nitrogen were observed.

Original language	English
Pages (from-to)	1753-1756
Number of pages	4
Journal	Fusion Engineering and Design
Volume	86
Issue number	9-11
DOIs	https://doi.org/10.1016/j.fusengdes.2011.02.085
State	Published - Oct 2011
Externally published	Yes

Keywords

ASDEX Upgrade
Divertor
Electron microscopy
Erosion
PFCs lifetime
Re-deposition

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10.1016/j.fusengdes.2011.02.085

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title = "High resolution scanning transmission electron microscopy (HR STEM) analysis of re-deposited layer on ASDEX Upgrade tile",

abstract = "Erosion and re-deposition of plasma-facing components (PFCs) is one of the most important issues in fusion devices and as such it is an area of interest for many research groups. However, the structure and composition of re-deposited layers as well as the mechanism and condition of their formation are not yet fully described and understood. In the present study, the structure and the composition of co-deposited layers, which developed at the outer divertor strike point tiles in ASDEX Upgrade during the 2009 campaign were examined. High resolution scanning transmission electron microscopy (HRSTEM) combined with energy-dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS) have been used to identify deposits composition and morphology. Tungsten foam like structure and co-deposits rich in tungsten, oxygen, carbon, boron and nitrogen were observed.",

keywords = "ASDEX Upgrade, Divertor, Electron microscopy, Erosion, PFCs lifetime, Re-deposition",

author = "M. Rasinski and E. Fortuna-Zalesna and M. Mayer and R. Neu and T. Plocinski and M. Lewandowska and Kurzydlowski, {K. J.}",

note = "Funding Information: This work, supported by European Communities under the contract of Association between EURATOM/IPPLM and EURATOM/IPP, was carried out within the EFDA task Force on Plasma Wall Interactions. The view and option expressed herein do not necessarily reflect those of the European Commission. Funding Information: This work has been a part of the EURATOM-IPPLM Physics Programme founded by European Communities and Polish Ministry of Science and Higher Education under the contracts nos. FU07-CT-2007-00061 and 1170/7PR-EURATOM/2009/7, respectively.",

year = "2011",

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AU - Rasinski, M.

AU - Fortuna-Zalesna, E.

AU - Mayer, M.

AU - Neu, R.

AU - Plocinski, T.

AU - Lewandowska, M.

AU - Kurzydlowski, K. J.

N1 - Funding Information: This work, supported by European Communities under the contract of Association between EURATOM/IPPLM and EURATOM/IPP, was carried out within the EFDA task Force on Plasma Wall Interactions. The view and option expressed herein do not necessarily reflect those of the European Commission. Funding Information: This work has been a part of the EURATOM-IPPLM Physics Programme founded by European Communities and Polish Ministry of Science and Higher Education under the contracts nos. FU07-CT-2007-00061 and 1170/7PR-EURATOM/2009/7, respectively.

PY - 2011/10

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AB - Erosion and re-deposition of plasma-facing components (PFCs) is one of the most important issues in fusion devices and as such it is an area of interest for many research groups. However, the structure and composition of re-deposited layers as well as the mechanism and condition of their formation are not yet fully described and understood. In the present study, the structure and the composition of co-deposited layers, which developed at the outer divertor strike point tiles in ASDEX Upgrade during the 2009 campaign were examined. High resolution scanning transmission electron microscopy (HRSTEM) combined with energy-dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS) have been used to identify deposits composition and morphology. Tungsten foam like structure and co-deposits rich in tungsten, oxygen, carbon, boron and nitrogen were observed.

KW - ASDEX Upgrade

KW - Divertor

KW - Electron microscopy

KW - Erosion

KW - PFCs lifetime

KW - Re-deposition

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ER -

High resolution scanning transmission electron microscopy (HR STEM) analysis of re-deposited layer on ASDEX Upgrade tile

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