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@ARTICLE{Wirtz:819309,
author = {Wirtz, M. and Berger, M. and Huber, A. and Kreter, A. and
Linke, J. and Pintsuk, G. and Rasinski, M. and Sergienko, G.
and Unterberg, B.},
title = {{I}nfluence of helium induced nanostructures on the thermal
shock performance of tungsten},
journal = {Nuclear materials and energy},
volume = {9},
issn = {2352-1791},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-05010},
pages = {177-180},
year = {2016},
abstract = {Experiments were performed in the linear plasma device
PSI-2 in order to investigate the synergistic effects of
combined steady-state He-plasma and thermal shock exposure.
Tungsten produced according to the ITER material
specifications by Plansee SE, Austria, was loaded
sequentially and simultaneously by steady-state He plasma
and transient thermal loads induced by a laser beam. All
tungsten samples were exposed to helium plasma for 40 min at
a base temperature of ca. 850 °C and a flux of ca. 2.8 ×
1022 m−2s−1. Before, during and after the plasma
exposure 1000 thermal shock pulses with a pulse duration of
1 ms and a power density 0.76 GW/m² were applied on the
samples. The thermal shock exposure before and after plasma
exposure was done at room temperature in order to
investigate helium induced surface effects also within
cracks. The obtained results show that the combination of He
plasma with transient thermal shock events results in a
severe modification such as reduced height or agglomeration
of the sub-surface He-bubbles and of the created
nanostructures, i.e. W-fuzz.},
cin = {IEK-2 / IEK-4},
ddc = {333.7},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000391191500030},
doi = {10.1016/j.nme.2016.07.002},
url = {https://juser.fz-juelich.de/record/819309},
}