%0 Journal Article
%A Jiang, X.
%A Sergienko, G.
%A Kreter, A.
%A Brezinsek, S.
%A Linsmeier, Ch.
%T In situ study of short-term retention of deuterium in tungsten during and after plasma exposure in PSI-2
%J Nuclear fusion
%V 61
%N 9
%@ 0029-5515
%C Vienna
%I IAEA
%M FZJ-2021-05624
%P 096006 -
%D 2021
%Z Bitte Post-print ergänzen
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000676027600001
%R 10.1088/1741-4326/ac112e
%U https://juser.fz-juelich.de/record/904054