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@ARTICLE{Eksaeva:891414,
author = {Eksaeva, Alina and Borodin, D. and Romazanov, J. and
Kreter, A. and Pospieszczyk, A. and Dickheuer, S. and
Möller, S. and Göths, B. and Rasinski, M. and Knoche, U.
and Terra, A. and Kirschner, A. and Borodkina, I. and
Eichler, M. and Unterberg, B. and Brezinsek, S. and
Linsmeier, Ch and Vassallo, E. and Pedroni, M. and Passoni,
M. and Dellasega, D. and Sala, M. and Romeo, F. and
Henderson, S. and O’Mullane, M. and Summers, H. and
Tskhakaya, D. and Schmid, K.},
title = {{ERO}2.0 modelling of the effects of surface roughness on
molybdenum erosion and redeposition in the {PSI}-2 linear
plasma device},
journal = {Physica scripta},
volume = {T171},
issn = {1402-4896},
address = {Stockholm},
publisher = {The Royal Swedish Academy of Sciences},
reportid = {FZJ-2021-01499},
pages = {014057 -},
year = {2020},
abstract = {The surface morphology of plasma-facing components (PFCs)
and its evolution during plasma irradiation has been shown
to have a significant effect on the erosion and subsequent
transport of sputtered particles in plasma. This in turn can
influence the resulting lifetime of PFCs. A model for
treatment of the effect of surface roughness on the erosion
of PFCs has recently been incorporated into the
three-dimensional Monte Carlo code ERO2.0. First simulations
have confirmed a significant influence of the assumed
surface roughness (for both regular and stochastic
numerically constructed samples) on both the effective
sputtering yields Yeff and the effective angular
distributions of sputtered particles. In this study, a
series of experiments at the linear plasma device PSI-2 are
conducted to test the effect of surface roughness on the
sputtering parameters. Graphite samples prepared with a 100
nm molybdenum layer with various surface roughness
characteristic sizes (Ra = 110 nm, 280 nm, 600 nm and Ra <
20 nm) were exposed to a helium plasma in the PSI-2 linear
plasma device at a magnetic field B = 0.1 T. These PSI-2
experiments were simulated using ERO2.0 with a surface
morphology model. Simulations are able to reproduce the
experimentally observed significant suppression of erosion
for higher Ra values.},
cin = {IEK-4},
ddc = {530},
cid = {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:000520000600057},
doi = {10.1088/1402-4896/ab5810},
url = {https://juser.fz-juelich.de/record/891414},
}