Journal Article

FZJ-2021-05624

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png In situ study of short-term retention of deuterium in tungsten during and after plasma exposure in PSI-2

Jiang, X. (Corresponding author)FZJ* ; Sergienko, G.FZJ* ; Kreter, A.FZJ* ; Brezinsek, S.FZJ* ; Linsmeier, C.FZJ*

2021
IAEA Vienna

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Please use a persistent id in citations: doi:10.1088/1741-4326/ac112e

Abstract: In situ monitoring of the hydrogenic fuel inventory in plasma-facing materials (PFMs) is a key issue for the sustainable and safe operation of a magnetically confined fusion device. A laser induced breakdown spectroscopy system has been applied on the linear plasma device PSI-2 to determine the short-term retention of deuterium (D) in the most promising PFM-tungsten (W). Measurements of the fuel content were performed (a) during plasma exposure, providing the dynamic D content in W and (b) after plasma exposure, determining the outgassing of D from W in vacuum. The in situ measurement of D content in W is in the time range of about 100 minutes before plasma termination (during plasma exposure) to 240 minutes after plasma termination (after plasma exposure). The measured surface D content in W drops to 17%–37% of the initial amount (measured before the plasma is switched off), showing a reduction factor of ca. 3–6 within the first 240 minutes.

Note: Bitte Post-print ergänzen

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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 ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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