Journal Article

FZJ-2021-05636

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png D retention and material defects probed using Raman microscopy in JET limiter samples and beryllium-based synthesized samples

Pardanaud, C. ; Kumar, M. ; Roubin, P. ; Martin, C. ; Ferro, Y. ; Denis, J. ; Widdowson, A. ; Douai, D. ; Baldwin, M. J. ; Založnik, A. ; Lungu, C. ; Porosnicu, C. ; Dinca, P. ; Dittmar, T. (Corresponding author)FZJ* ; Hakola, A.

2021
The Royal Swedish Academy of Sciences Stockholm

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Please use a persistent id in citations: http://hdl.handle.net/2128/30443  doi:10.1088/1402-4896/ac267b

Abstract: We report on the detection by means of Raman spectroscopy of amorphous beryllium deuteride, BeD2, in magnetron sputtered deposits synthesized in two different laboratories and containing about 20 at% of deuterium. In contrast, this signature has not been found for the JET limiter samples studied coming from the inner, outer or upper limiters, even when coming from a deposition zone of the limiters. We give a way to disentangle that BeD2 signature from other signatures falling in the same spectroscopic range and mainly related to other phenomena. We also analyze the Raman characteristics of the JET sample defects. These results could help in the interpretation of D thermal desorption spectra and in future analyses of JET thick Be deposit divertor tiles.

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Contributing Institute(s):

1. Plasmaphysik (IEK-4)

Research Program(s):

1. 134 - Plasma-Wand-Wechselwirkung (POF4-134) (POF4-134)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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